diff --git a/Sto/STODatabaseImplement/Implements/CarStorage.cs b/Sto/STODatabaseImplement/Implements/CarStorage.cs
new file mode 100644
index 0000000..4a59262
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/CarStorage.cs
@@ -0,0 +1,97 @@
+using Microsoft.EntityFrameworkCore;
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+
+namespace STODatabaseImplement.Implements
+{
+    public class CarStorage : ICarStorage
+    {
+        public List<CarViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Cars.Include(x => x.Spares).ThenInclude(x => x.Spare).ToList()
+                    .Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<CarViewModel> GetFilteredList(CarSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Brand))
+            {
+                return new();
+            }
+            using var context = new STODatabase();
+            return context.Cars.Include(x => x.Spares).ThenInclude(x => x.Spare)
+                    .Where(x => x.Brand.Contains(model.Brand)).ToList().Select(x => x.GetViewModel).ToList();
+        }
+
+        public CarViewModel? GetElement(CarSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Brand) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Cars.Include(x => x.Spares).ThenInclude(x => x.Spare)
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.Brand) && x.Brand == model.Brand) ||
+                (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public CarViewModel? Insert(CarBindingModel model)
+        {
+            using var context = new STODatabase();
+            var newCar = Car.Create(context, model);
+            if (newCar == null)
+            {
+                return null;
+            }
+            context.Cars.Add(newCar);
+            context.SaveChanges();
+            return newCar.GetViewModel;
+        }
+
+        public CarViewModel? Update(CarBindingModel model)
+        {
+            using var context = new STODatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var Car = context.Cars.FirstOrDefault(rec => rec.Id == model.Id);
+                if (Car == null)
+                {
+                    return null;
+                }
+                Car.Update(model);
+                context.SaveChanges();
+                Car.UpdateComponents(context, model);
+                transaction.Commit();
+                return Car.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public CarViewModel? Delete(CarBindingModel model)
+        {
+            using var context = new STODatabase();
+            var element = context.Cars.Include(x => x.Spares).FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Cars.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/EmployerStorage.cs b/Sto/STODatabaseImplement/Implements/EmployerStorage.cs
new file mode 100644
index 0000000..4537506
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/EmployerStorage.cs
@@ -0,0 +1,81 @@
+using Microsoft.EntityFrameworkCore;
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+
+namespace STODatabaseImplement.Implements
+{
+    public class EmployerStorage : IEmployerStorage
+    {
+        public List<EmployerViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Employers.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<EmployerViewModel> GetFilteredList(EmployerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Login) && string.IsNullOrEmpty(model.Email))
+            {
+                return new();
+            }
+            using var context = new STODatabase();
+            return context.Employers.Where(x => (!string.IsNullOrEmpty(model.Login) && x.Login.Contains(model.Login)) ||
+            (!string.IsNullOrEmpty(model.Email) && !x.Email.Contains(model.Email))).Select(x => x.GetViewModel).ToList();
+        }
+
+        public EmployerViewModel? GetElement(EmployerSearchModel model)
+        {
+            if (!model.Id.HasValue && string.IsNullOrEmpty(model.Login) && (string.IsNullOrEmpty(model.Email) && string.IsNullOrEmpty(model.Password)))
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Employers.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id) ||
+            (!string.IsNullOrEmpty(model.Login) && x.Login == model.Login) ||
+            (!string.IsNullOrEmpty(model.Email) && !string.IsNullOrEmpty(model.Password) && x.Email == model.Email && x.Password == model.Password))?.GetViewModel;
+        }
+
+        public EmployerViewModel? Insert(EmployerBindingModel model)
+        {
+            var newEmployer = Employer.Create(model);
+            if (newEmployer == null)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            context.Employers.Add(newEmployer);
+            context.SaveChanges();
+            return newEmployer.GetViewModel;
+        }
+
+        public EmployerViewModel? Update(EmployerBindingModel model)
+        {
+            using var context = new STODatabase();
+            var storekeeper = context.Employers.FirstOrDefault(x => x.Id == model.Id);
+            if (storekeeper == null)
+            {
+                return null;
+            }
+            storekeeper.Update(model);
+            context.SaveChanges();
+            return storekeeper.GetViewModel;
+        }
+
+        public EmployerViewModel? Delete(EmployerBindingModel model)
+        {
+            using var context = new STODatabase();
+            var storekeeper = context.Employers.FirstOrDefault(x => x.Id == model.Id);
+            if (storekeeper != null)
+            {
+                context.Employers.Remove(storekeeper);
+                context.SaveChanges();
+                return storekeeper.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/MaintenanceStorage.cs b/Sto/STODatabaseImplement/Implements/MaintenanceStorage.cs
new file mode 100644
index 0000000..82485e5
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/MaintenanceStorage.cs
@@ -0,0 +1,90 @@
+using Microsoft.EntityFrameworkCore;
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+
+namespace STODatabaseImplement.Implements
+{
+    public class MaintenanceStorage : IMaintenanceStorage
+    {
+        public List<MaintenanceViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Maintenances.Include(x => x.Cars).ThenInclude(x => x.Car).ToList()
+                    .Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<MaintenanceViewModel> GetFilteredList(MaintenanceSearchModel model)
+        {
+            using var context = new STODatabase();
+            return context.Maintenances.Include(x => x.Cars).ThenInclude(x => x.Car).ToList().Select(x => x.GetViewModel).ToList();
+        }
+
+        public MaintenanceViewModel? GetElement(MaintenanceSearchModel model)
+        {
+            if ( !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Maintenances.Include(x => x.Cars).ThenInclude(x => x.Car)
+                .FirstOrDefault(x =>                
+                (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public MaintenanceViewModel? Insert(MaintenanceBindingModel model)
+        {
+            using var context = new STODatabase();
+            var newMaintenance = Maintenance.Create(context, model);
+            if (newMaintenance == null)
+            {
+                return null;
+            }
+            context.Maintenances.Add(newMaintenance);
+            context.SaveChanges();
+            return newMaintenance.GetViewModel;
+        }
+
+        public MaintenanceViewModel? Update(MaintenanceBindingModel model)
+        {
+            using var context = new STODatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var Maintenance = context.Maintenances.FirstOrDefault(rec => rec.Id == model.Id);
+                if (Maintenance == null)
+                {
+                    return null;
+                }
+                Maintenance.Update(model);
+                context.SaveChanges();
+                Maintenance.UpdateComponents(context, model);
+                transaction.Commit();
+                return Maintenance.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public MaintenanceViewModel? Delete(MaintenanceBindingModel model)
+        {
+            using var context = new STODatabase();
+            var element = context.Maintenances.Include(x => x.Cars).FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Maintenances.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/ServiceStorage.cs b/Sto/STODatabaseImplement/Implements/ServiceStorage.cs
new file mode 100644
index 0000000..fa17797
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/ServiceStorage.cs
@@ -0,0 +1,87 @@
+using Microsoft.EntityFrameworkCore;
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+
+namespace STODatabaseImplement.Implements
+{
+    public class ServiceStorage : IServiceStorage
+    {
+        public List<ServiceViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Services.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<ServiceViewModel> GetFilteredList(ServiceSearchModel model)
+        {
+            using var context = new STODatabase();
+            return context.Services.Select(x => x.GetViewModel).ToList();
+        }
+
+        public ServiceViewModel? GetElement(ServiceSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ServiceDescription) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Services.FirstOrDefault(x =>
+            (!string.IsNullOrEmpty(model.ServiceDescription) && x.ServiceDescription == model.ServiceDescription) ||
+            (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public ServiceViewModel? Insert(ServiceBindingModel model)
+        {
+            using var context = new STODatabase();
+            var newService = Service.Create(model);
+            if (newService == null)
+            {
+                return null;
+            }
+            context.Services.Add(newService);
+            context.SaveChanges();
+            return newService.GetViewModel;
+        }
+
+        public ServiceViewModel? Update(ServiceBindingModel model)
+        {
+            using var context = new STODatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var Service = context.Services.FirstOrDefault(rec => rec.Id == model.Id);
+                if (Service == null)
+                {
+                    return null;
+                }
+                Service.Update(model);
+                context.SaveChanges();
+                transaction.Commit();
+                return Service.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public ServiceViewModel? Delete(ServiceBindingModel model)
+        {
+            using var context = new STODatabase();
+            var element = context.Services.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Services.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/SpareStorage.cs b/Sto/STODatabaseImplement/Implements/SpareStorage.cs
new file mode 100644
index 0000000..fce8dbe
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/SpareStorage.cs
@@ -0,0 +1,79 @@
+
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Implements
+{
+    public class SpareStorage : ISpareStorage
+    {
+        public List<SpareViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Spares.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<SpareViewModel> GetFilteredList(SpareSearchModel model)
+        {
+            using var context = new STODatabase();
+            return context.Spares.Select(x => x.GetViewModel).ToList();
+        }
+
+        public SpareViewModel? GetElement(SpareSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Spares.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public SpareViewModel? Insert(SpareBindingModel model)
+        {
+            using var context = new STODatabase();
+            var newSpares = Spare.Create( model);
+            if(newSpares == null)
+            {
+                return null;
+            }
+            context.Spares.Add(newSpares);
+            context.SaveChanges();
+            return newSpares.GetViewModel;
+        }
+
+        public SpareViewModel? Update(SpareBindingModel model)
+        {
+            using var context = new STODatabase();
+            var spares = context.Spares.FirstOrDefault(x=>x.Id == model.Id);
+            if(spares == null)
+            {
+                return null;
+            }
+            spares.Update(model);
+            context.SaveChanges();
+            return spares.GetViewModel;
+        }
+
+        public SpareViewModel? Delete(SpareBindingModel model)
+        {
+            using var context = new STODatabase();
+            var spare = context.Spares.FirstOrDefault(x=>x.Id==model.Id);
+            if(spare != null)
+            {
+                context.Spares.Remove(spare);
+                context.SaveChanges();
+                return spare.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/StorekeeperStorage.cs b/Sto/STODatabaseImplement/Implements/StorekeeperStorage.cs
new file mode 100644
index 0000000..737b513
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/StorekeeperStorage.cs
@@ -0,0 +1,86 @@
+
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Implements
+{
+    public class StorekeeperStorage : IStorekeeperStorage
+    {
+        public List<StorekeeperViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Storekeepers.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<StorekeeperViewModel> GetFilteredList(StorekeeperSearchModel model)
+        {
+            if(string.IsNullOrEmpty(model.Login) && string.IsNullOrEmpty(model.Email))
+            {
+                return new();
+            }
+            using var context = new STODatabase();
+            return context.Storekeepers.Where(x => (!string.IsNullOrEmpty(model.Login) && x.Login.Contains(model.Login)) ||
+            (!string.IsNullOrEmpty(model.Email) && !x.Email.Contains(model.Email))).Select(x => x.GetViewModel).ToList();
+        }
+
+        public StorekeeperViewModel? GetElement(StorekeeperSearchModel model)
+        {
+            if (!model.Id.HasValue && string.IsNullOrEmpty(model.Login) && (string.IsNullOrEmpty(model.Email) && string.IsNullOrEmpty(model.Password)))
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Storekeepers.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id) ||
+            (!string.IsNullOrEmpty(model.Login) && x.Login == model.Login) ||
+            (!string.IsNullOrEmpty(model.Email) && !string.IsNullOrEmpty(model.Password) && x.Email == model.Email && x.Password == model.Password))?.GetViewModel;
+        }
+
+        public StorekeeperViewModel? Insert(StorekeeperBindingModel model)
+        {
+            var newStorekeeper = Storekeeper.Create(model);
+            if(newStorekeeper == null)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            context.Storekeepers.Add(newStorekeeper);
+            context.SaveChanges();
+            return newStorekeeper.GetViewModel;
+        }
+
+        public StorekeeperViewModel? Update(StorekeeperBindingModel model)
+        {
+            using var context = new STODatabase();
+            var storekeeper = context.Storekeepers.FirstOrDefault(x=>x.Id == model.Id);
+            if(storekeeper == null)
+            {
+                return null;
+            }
+            storekeeper.Update(model);
+            context.SaveChanges();
+            return storekeeper.GetViewModel;
+        }
+
+        public StorekeeperViewModel? Delete(StorekeeperBindingModel model)
+        {
+            using var context = new STODatabase();
+            var storekeeper = context.Storekeepers.FirstOrDefault(x=>x.Id==model.Id);
+            if(storekeeper != null)
+            {
+                context.Storekeepers.Remove(storekeeper);
+                context.SaveChanges();
+                return storekeeper.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/WorkDurationStorage.cs b/Sto/STODatabaseImplement/Implements/WorkDurationStorage.cs
new file mode 100644
index 0000000..9f1412d
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/WorkDurationStorage.cs
@@ -0,0 +1,79 @@
+
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Implements
+{
+    public class WorkDurationStorage : IWorkDurationStorage
+    {
+        public List<WorkDurationViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.WorkDurations.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<WorkDurationViewModel> GetFilteredList(WorkDurationSearchModel model)
+        {
+            using var context = new STODatabase();
+            return context.WorkDurations.Select(x => x.GetViewModel).ToList();
+        }
+
+        public WorkDurationViewModel? GetElement(WorkDurationSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.WorkDurations.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public WorkDurationViewModel? Insert(WorkDurationBindingModel model)
+        {
+            using var context = new STODatabase();
+            var newWorkDuration = WorkDuration.Create( model);
+            if(newWorkDuration == null)
+            {
+                return null;
+            }
+            context.WorkDurations.Add(newWorkDuration);
+            context.SaveChanges();
+            return newWorkDuration.GetViewModel;
+        }
+
+        public WorkDurationViewModel? Update(WorkDurationBindingModel model)
+        {
+            using var context = new STODatabase();
+            var workDuration = context.WorkDurations.FirstOrDefault(x=>x.Id == model.Id);
+            if(workDuration == null)
+            {
+                return null;
+            }
+            workDuration.Update(model);
+            context.SaveChanges();
+            return workDuration.GetViewModel;
+        }
+
+        public WorkDurationViewModel? Delete(WorkDurationBindingModel model)
+        {
+            using var context = new STODatabase();
+            var workDuration = context.WorkDurations.FirstOrDefault(x=>x.Id==model.Id);
+            if(workDuration != null)
+            {
+                context.WorkDurations.Remove(workDuration);
+                context.SaveChanges();
+                return workDuration.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Implements/WorkStorage.cs b/Sto/STODatabaseImplement/Implements/WorkStorage.cs
new file mode 100644
index 0000000..e2bc8de
--- /dev/null
+++ b/Sto/STODatabaseImplement/Implements/WorkStorage.cs
@@ -0,0 +1,86 @@
+
+using Microsoft.EntityFrameworkCore;
+using STOContracts.BindingModels;
+using STOContracts.SearchModels;
+using STOContracts.StoragesContracts;
+using STOContracts.ViewModels;
+using STODatabaseImplement;
+using STODatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Implements
+{
+    public class WorkStorage : IWorkStorage
+    {
+        public List<WorkViewModel> GetFullList()
+        {
+            using var context = new STODatabase();
+            return context.Works.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<WorkViewModel> GetFilteredList(WorkSearchModel model)
+        {
+            if(string.IsNullOrEmpty(model.Title))
+            {
+                return new();
+            }
+            using var context = new STODatabase();
+            return context.Works.Select(x => x.GetViewModel).ToList();
+        }
+
+        public WorkViewModel? GetElement(WorkSearchModel model)
+        {
+            if (!model.Id.HasValue && string.IsNullOrEmpty(model.Title))
+            {
+                return null;
+            }
+            using var context = new STODatabase();
+            return context.Works.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id) ||
+            (!string.IsNullOrEmpty(model.Title) && x.Title == model.Title))?.GetViewModel;
+        }
+
+        public WorkViewModel? Insert(WorkBindingModel model)
+        {
+            using var context = new STODatabase();
+            var newWork = Work.Create(context, model);
+            if(newWork == null)
+            {
+                return null;
+            }
+            context.Works.Add(newWork);
+            context.SaveChanges();
+            return newWork.GetViewModel;
+        }
+
+        public WorkViewModel? Update(WorkBindingModel model)
+        {
+            using var context = new STODatabase();
+            var work = context.Works.FirstOrDefault(x=>x.Id == model.Id);
+            if(work == null)
+            {
+                return null;
+            }
+            work.Update(model);
+            work.UpdateSpares(context, model);
+            context.SaveChanges();
+            return work.GetViewModel;
+        }
+
+        public WorkViewModel? Delete(WorkBindingModel model)
+        {
+            using var context = new STODatabase();
+            var work = context.Works.FirstOrDefault(x=>x.Id==model.Id);
+            if(work != null)
+            {
+                context.Works.Remove(work);
+                context.SaveChanges();
+                return work.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Car.cs b/Sto/STODatabaseImplement/Models/Car.cs
new file mode 100644
index 0000000..ed0e45e
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Car.cs
@@ -0,0 +1,92 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace STODatabaseImplement.Models
+{
+    public class Car : ICarModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Brand { get; set; } =string.Empty;
+        [Required]
+        public string Model { get; set; } = string.Empty;
+        [Required]
+        public string VIN { get; set; } = string.Empty;
+
+        [ForeignKey("CarId")]
+        public virtual List<Service> Services { get; set; } = new();
+
+        private Dictionary<int, (ISpareModel, int)>? _carSpares = null;
+        [NotMapped]
+        public Dictionary<int, (ISpareModel, int)> CarSpares
+        {
+            get
+            {
+                if (_carSpares == null)
+                {
+                    _carSpares = Spares.ToDictionary(recCS => recCS.SpareId, recCS => (recCS.Spare as ISpareModel, recCS.Count));
+                }
+                return _carSpares;
+            }
+        }
+        [ForeignKey("CarId")]
+        public virtual List<CarSpare> Spares { get; set; } = new();
+        public static Car Create(STODatabase context, CarBindingModel model)
+        {
+            return new Car()
+            {
+                Id = model.Id,
+                Brand = model.Brand,
+                Model = model.Model,
+                VIN = model.VIN,
+                Spares = model.CarSpares.Select(x => new CarSpare
+                {
+                    Car = context.Cars.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+        public void Update(CarBindingModel model)
+        {
+        }
+        public CarViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Brand = Brand,
+            Model = Model,
+            VIN = VIN,
+            CarSpares = CarSpares
+        };
+        public void UpdateComponents(STODatabase context, CarBindingModel model)
+        {
+            var CarSpares = context.CarSpares.Where(recCS => recCS.CarId == model.Id).ToList();
+            if (CarSpares != null && CarSpares.Count > 0)
+            {
+                context.CarSpares.RemoveRange(CarSpares.Where(rec => !model.CarSpares.ContainsKey(rec.CarId)));
+                context.SaveChanges();
+                CarSpares = context.CarSpares.Where(rec => rec.CarId == model.Id).ToList();
+                foreach (var updateComponent in CarSpares)
+                {
+                    updateComponent.Count = model.CarSpares[updateComponent.CarId].Item2;
+                    model.CarSpares.Remove(updateComponent.CarId);
+                }
+                context.SaveChanges();
+            }
+            var Car = context.Cars.First(x => x.Id == Id);
+            foreach (var pc in model.CarSpares)
+            {
+                context.CarSpares.Add(new CarSpare
+                {
+                    Car = Car,
+                    Spare = context.Spares.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _carSpares = null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/CarSpare.cs b/Sto/STODatabaseImplement/Models/CarSpare.cs
new file mode 100644
index 0000000..fcb7fa7
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/CarSpare.cs
@@ -0,0 +1,21 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace STODatabaseImplement.Models
+{
+    public class CarSpare
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int SpareId { get; set; }
+
+        [Required]
+        public int CarId { get; set; }
+        [Required]
+        public int Count { get; set; }
+
+        public virtual Car Car { get; set; } = new();
+
+        public virtual Spare Spare { get; set; } = new();
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Employer.cs b/Sto/STODatabaseImplement/Models/Employer.cs
new file mode 100644
index 0000000..eedc127
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Employer.cs
@@ -0,0 +1,48 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace STODatabaseImplement.Models
+{
+    public class Employer : IEmployerModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Login { get; set; } = String.Empty;
+        [Required]
+        public string Password { get; set; } = String.Empty;
+        [Required]
+        public string Email { get; set; } = String.Empty;
+        [ForeignKey("EmployerId")]
+        public virtual List<Maintenance> Maintenances { get; set; } = new();
+
+
+        public static Employer Create(EmployerBindingModel model)
+        {
+            return new Employer()
+            {
+                Id = model.Id,
+                Login = model.Login,
+                Password = model.Password,
+                Email = model.Email,
+            };
+        }
+
+        public void Update(EmployerBindingModel model)
+        {
+            Login = model.Login;
+            Password = model.Password;
+            Email = model.Email;
+        }
+
+        public EmployerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Login = Login,
+            Email = Email,
+            Password = Password
+        };
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Maintenance.cs b/Sto/STODatabaseImplement/Models/Maintenance.cs
new file mode 100644
index 0000000..07ff825
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Maintenance.cs
@@ -0,0 +1,92 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace STODatabaseImplement.Models
+{
+    public class Maintenance : IMaintenanceModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public int EmployerId { get; set; }
+        [Required]
+        public double Cost { get; set; }
+        [Required]
+        public DateTime DateCreate { get; set; }
+
+        private Dictionary<int, (ICarModel, int)> _maintenanceCars = null;
+        [NotMapped]
+        public Dictionary<int, (ICarModel, int)> MaintenanceCars
+        {
+            get
+            {
+                if (_maintenanceCars == null)
+                {
+                    _maintenanceCars = Cars
+                        .ToDictionary(recCM =>  recCM.CarId, recCM => (recCM.Car as ICarModel,recCM.Count));
+                }
+                return _maintenanceCars;
+            }
+        }
+        [ForeignKey("MaintenanceId")]
+        public virtual List<MaintenanceCar> Cars { get; set; } = new();
+
+        public static Maintenance Create(STODatabase context, MaintenanceBindingModel model)
+        {
+            return new Maintenance()
+            {
+                Id = model.Id,
+                EmployerId = model.EmployerId,
+                Cars = model.MaintenanceCars.Select(x => new MaintenanceCar
+                {
+                    Car = context.Cars.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+
+        public void Update(MaintenanceBindingModel model)
+        {
+            Cost = model.Cost;
+        }
+
+        public MaintenanceViewModel GetViewModel => new()
+        {
+            Id = Id,
+            EmployerId = EmployerId,
+            Cost = Cost,
+            DateCreate = DateCreate,
+            MaintenanceCars = MaintenanceCars
+        };
+        public void UpdateComponents(STODatabase context, MaintenanceBindingModel model)
+        {
+            var MaintenanceCars = context.MaintenanceCars.Where(rec => rec.MaintenanceId == model.Id).ToList();
+            if (MaintenanceCars != null && MaintenanceCars.Count > 0)
+            {
+                context.MaintenanceCars.RemoveRange(MaintenanceCars.Where(rec => !model.MaintenanceCars.ContainsKey(rec.CarId)));
+                context.SaveChanges();
+                MaintenanceCars = context.MaintenanceCars.Where(rec => rec.MaintenanceId == model.Id).ToList();
+                foreach (var updateComponent in MaintenanceCars)
+                {
+                    updateComponent.Count = model.MaintenanceCars[updateComponent.CarId].Item2;
+                    model.MaintenanceCars.Remove(updateComponent.CarId);
+                }
+                context.SaveChanges();
+            }
+            var Maintenance = context.Maintenances.First(x => x.Id == Id);
+            foreach (var pc in model.MaintenanceCars)
+            {
+                context.MaintenanceCars.Add(new MaintenanceCar
+                {
+                    Maintenance = Maintenance,
+                    Car = context.Cars.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _maintenanceCars = null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/MaintenanceCar.cs b/Sto/STODatabaseImplement/Models/MaintenanceCar.cs
new file mode 100644
index 0000000..4d62410
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/MaintenanceCar.cs
@@ -0,0 +1,22 @@
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+
+namespace STODatabaseImplement.Models
+{
+    public class MaintenanceCar
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int MaintenanceId { get; set; }
+
+        [Required]
+        public int CarId { get; set; }
+        [Required]
+        public int Count { get; set; }
+
+        public virtual Car Car { get; set; } = new();
+
+        public virtual Maintenance Maintenance { get; set; } = new();
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Service.cs b/Sto/STODatabaseImplement/Models/Service.cs
new file mode 100644
index 0000000..ed90001
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Service.cs
@@ -0,0 +1,32 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System.ComponentModel.DataAnnotations;
+
+namespace STODatabaseImplement.Models
+{
+    public class Service : IServiceModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string ServiceDescription { get; set; } = string.Empty;
+
+        public static Service Create(ServiceBindingModel model)
+        {
+            return new Service()
+            {
+                Id = model.Id,
+                ServiceDescription = model.ServiceDescription,
+            };
+        }
+        public void Update(ServiceBindingModel model)
+        {
+            ServiceDescription = model.ServiceDescription;
+        }
+        public ServiceViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ServiceDescription = ServiceDescription,
+        };
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Spare.cs b/Sto/STODatabaseImplement/Models/Spare.cs
new file mode 100644
index 0000000..e3ad842
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Spare.cs
@@ -0,0 +1,43 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System.ComponentModel.DataAnnotations;
+
+namespace STODatabaseImplement.Models
+{
+    public class Spare : ISpareModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Name { get; set; } = String.Empty;
+        [Required]
+        public double Price { get; set; }
+
+        public static Spare Create(SpareBindingModel model)
+        {
+            return new Spare
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Price = model.Price,
+            };
+        }
+
+        public void Update(SpareBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+        }
+
+        public SpareViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Price = Price,
+        };
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Storekeeper.cs b/Sto/STODatabaseImplement/Models/Storekeeper.cs
new file mode 100644
index 0000000..b1e6ade
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Storekeeper.cs
@@ -0,0 +1,53 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Models
+{
+    public class Storekeeper : IStorekeeperModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Login { get; set; } = String.Empty;
+        [Required]
+        public string Password { get; set; } = String.Empty;
+        [Required]
+        public string Email { get; set; } = String.Empty;
+        [ForeignKey("StorekeeperId")]
+        public virtual List<Work> Works { get; set; } = new();
+
+
+        public static Storekeeper Create(StorekeeperBindingModel model)
+        {
+            return new Storekeeper()
+            {
+                Id = model.Id,
+                Login = model.Login,
+                Password = model.Password,
+                Email = model.Email,
+            };
+        }
+
+        public void Update(StorekeeperBindingModel model)
+        {
+            Login = model.Login;
+            Password = model.Password;
+            Email = model.Email;
+        }
+
+        public StorekeeperViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Login = Login,
+            Email = Email,
+            Password = Password
+        };
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/Work.cs b/Sto/STODatabaseImplement/Models/Work.cs
new file mode 100644
index 0000000..f2ad7e3
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/Work.cs
@@ -0,0 +1,154 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Numerics;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Models
+{
+    public class Work : IWorkModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Title { get; set; } = String.Empty;
+        [Required]
+        public double Price { get; set; }
+        [Required]
+        public int StorekeeperId { get; set; }
+        [Required]
+        public int DurationId { get; set; }
+
+        public DateTime Date { get; set; } = DateTime.Now;
+
+        private Dictionary<int, (ISpareModel, int)>? _workSpares { get; set; } = null;
+        [NotMapped]
+        public Dictionary<int, (ISpareModel, int)> WorkSpares {
+            get
+            {
+                if (_workSpares == null)
+                {
+                    _workSpares = Spares.ToDictionary(recWS => recWS.SpareId, recWS =>
+                    (recWS.Spare as ISpareModel, recWS.Count));
+                }
+                return _workSpares;
+            }
+        }
+
+        [ForeignKey("WorkId")]
+        public virtual List<WorkSpare> Spares { get; set; } = new();
+
+        private Dictionary<int, (IMaintenanceModel, int)>? _workMaintenances = null;
+
+        [NotMapped]
+        public Dictionary<int, (IMaintenanceModel, int)> WorkMaintences
+        {
+            get
+            {
+                if (_workMaintenances == null)
+                {
+                    _workMaintenances = Maintences.ToDictionary(recWM => recWM.MaintenceId, recWM =>
+                    (recWM.Maintenance as IMaintenanceModel, recWM.Count));
+                }
+                return _workMaintenances;
+            }
+        }
+        [ForeignKey("WorkId")]
+        public virtual List<WorkMaintence> Maintences { get; set; } = new();
+
+        public static Work Create(STODatabase context, WorkBindingModel model)
+        {
+            return new Work()
+            {
+                Id = model.Id,
+                Title = model.Title,
+                Price = model.Price,
+                Spares = model.WorkSpares.Select(x => new WorkSpare { 
+                    Spare = context.Spares.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList(),
+                Maintences = model.WorkMaintences.Select(x => new WorkMaintence
+                {
+                    Maintenance = context.Maintenances.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+
+        public void Update(WorkBindingModel model)
+        {
+            Title = model.Title;
+            Price = model.Price;
+        }
+
+        public WorkViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Title = Title,
+            Price = Price,
+        };
+
+        
+
+        public void UpdateSpares(STODatabase context, WorkBindingModel model)
+        {
+            var WorkSpares = context.WorkSpares.Where(rec => rec.WorkId == model.Id).ToList();
+            if (WorkSpares != null && WorkSpares.Count > 0)
+            {
+                context.WorkSpares.RemoveRange(WorkSpares.Where(rec => !model.WorkSpares.ContainsKey(rec.SpareId)));
+                context.SaveChanges();
+                foreach (var updateComponent in WorkSpares)
+                {
+                    updateComponent.Count = model.WorkSpares[updateComponent.SpareId].Item2;
+                    model.WorkSpares.Remove(updateComponent.SpareId);
+                }
+                context.SaveChanges();
+            }
+            var Work = context.Works.First(x => x.Id == Id);
+            foreach (var pc in model.WorkSpares)
+            {
+                context.WorkSpares.Add(new WorkSpare
+                {
+                    Work = Work,
+                    Spare = context.Spares.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _workSpares = null;
+        }
+
+        public void UpdateMaintences(STODatabase context, WorkBindingModel model)
+        {
+            var WorkMaintence = context.WorkMaintences.Where(rec => rec.WorkId == model.Id).ToList();
+            if (WorkMaintence != null && WorkMaintence.Count > 0)
+            {
+                context.WorkMaintences.RemoveRange(WorkMaintence.Where(rec => !model.WorkMaintences.ContainsKey(rec.MaintenceId)));
+                context.SaveChanges();
+                foreach (var updateComponent in WorkMaintence)
+                {
+                    updateComponent.Count = model.WorkMaintences[updateComponent.MaintenceId].Item2;
+                    model.WorkMaintences.Remove(updateComponent.MaintenceId);
+                }
+                context.SaveChanges();
+            }
+            var Work = context.Works.First(x => x.Id == Id);
+            foreach (var pc in model.WorkMaintences)
+            {
+                context.WorkMaintences.Add(new WorkMaintence
+                {
+                    Work = Work,
+                    Maintenance = context.Maintenances.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _workMaintenances = null;
+        }
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/WorkDuration.cs b/Sto/STODatabaseImplement/Models/WorkDuration.cs
new file mode 100644
index 0000000..9531995
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/WorkDuration.cs
@@ -0,0 +1,43 @@
+using STOContracts.BindingModels;
+using STOContracts.ViewModels;
+using STODataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Models
+{
+    public class WorkDuration : IWorkDurationModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int Duration { get; set; }
+
+        [ForeignKey("DurationId")]
+        public virtual List<Work> Works { get; set; }
+
+        public static WorkDuration Create(WorkDurationBindingModel model)
+        {
+            return new WorkDuration()
+            {
+                Id = model.Id,
+                Duration = model.Duration,
+            };
+        }
+        public void Update(WorkDurationBindingModel model)
+        {
+            Duration = model.Duration;
+        }
+        public WorkDurationViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Duration = Duration,
+        };
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/WorkMaintence.cs b/Sto/STODatabaseImplement/Models/WorkMaintence.cs
new file mode 100644
index 0000000..b84f3f6
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/WorkMaintence.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Models
+{
+    public class WorkMaintence
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int WorkId { get; set; }
+
+        [Required]
+        public int MaintenceId { get; set; }
+
+        [Required]
+        public int Count { get; set; }
+
+        public virtual Work Work { get; set; } = new();
+
+        public virtual Maintenance Maintenance { get; set; } = new();
+
+    }
+}
diff --git a/Sto/STODatabaseImplement/Models/WorkSpare.cs b/Sto/STODatabaseImplement/Models/WorkSpare.cs
new file mode 100644
index 0000000..007c5fb
--- /dev/null
+++ b/Sto/STODatabaseImplement/Models/WorkSpare.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace STODatabaseImplement.Models
+{
+    public class WorkSpare
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int WorkId { get; set; }
+
+        [Required]
+        public int SpareId { get; set; }
+
+        [Required]
+        public int Count { get; set; }
+
+        public virtual Work Work { get; set; } = new();
+
+        public virtual Spare Spare { get; set; } = new();
+
+    }
+}
diff --git a/Sto/STODatabaseImplement/STODatabase.cs b/Sto/STODatabaseImplement/STODatabase.cs
new file mode 100644
index 0000000..b107952
--- /dev/null
+++ b/Sto/STODatabaseImplement/STODatabase.cs
@@ -0,0 +1,31 @@
+using Microsoft.EntityFrameworkCore;
+using STODatabaseImplement.Models;
+using System.Diagnostics.Metrics;
+
+namespace STODatabaseImplement
+{
+	public class STODatabase : DbContext
+	{
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (!optionsBuilder.IsConfigured)
+            {
+				optionsBuilder.UseSqlServer(@"Data Source=SHADOWIK\SHADOWIK;Initial Catalog=STO;Integrated Security=True;TrustServerCertificate=True"); 
+			}
+            base.OnConfiguring(optionsBuilder);
+        }
+        public virtual DbSet<Car> Cars { set; get; }
+        public virtual DbSet<CarSpare> CarSpares { set; get; }
+        public virtual DbSet<Employer> Employers { set; get; }
+        public virtual DbSet<Maintenance> Maintenances { set; get; }
+        public virtual DbSet<MaintenanceCar> MaintenanceCars { set; get; }
+        public virtual DbSet<Service> Services { set; get; }
+        public virtual DbSet<Spare> Spares { set; get; }
+        public virtual DbSet<Storekeeper> Storekeepers  { set; get; }
+        public virtual DbSet<Work> Works { set; get; }
+        public virtual DbSet<WorkDuration> WorkDurations { set; get; }
+        public virtual DbSet<WorkMaintence> WorkMaintences { set; get; }
+        public virtual DbSet<WorkSpare> WorkSpares { set; get; }
+
+    }
+}
diff --git a/Sto/STODatabaseImplement/STODatabaseImplement.csproj b/Sto/STODatabaseImplement/STODatabaseImplement.csproj
new file mode 100644
index 0000000..78b9349
--- /dev/null
+++ b/Sto/STODatabaseImplement/STODatabaseImplement.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.4">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\STOContracts\STOContracts.csproj" />
+    <ProjectReference Include="..\STODataModels\STODataModels.csproj" />
+  </ItemGroup>
+
+</Project>