diff --git a/Hotel/HotelDatabaseImplement/HotelDataBase.cs b/Hotel/HotelDatabaseImplement/HotelDataBase.cs
new file mode 100644
index 0000000..f2e07b5
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/HotelDataBase.cs
@@ -0,0 +1,24 @@
+using HotelDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace HotelDatabaseImplement;
+
+public class HotelDataBase : DbContext
+{
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        if (optionsBuilder.IsConfigured == false)
+        {
+            optionsBuilder.UseSqlServer(@"Data Source=LAPTOP-QKSH4DCA\SQLEXPRESS;Initial Catalog=Hotel;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
+        }
+        base.OnConfiguring(optionsBuilder);
+    }
+    public virtual DbSet<Room> Rooms { get; set; }
+    public virtual DbSet<Reservation> Reservations { get; set; }
+    public virtual DbSet<ReservationRoom> ReservationRooms { get; set; }
+    public virtual DbSet<Maitre> Maitres { get; set; }
+    public virtual DbSet<Guest> Guests { get; set; }
+    public virtual DbSet<Cleaning> Cleanings { get; set; }
+    public virtual DbSet<CleaningInstruments> CleaningInstruments { get; set; }
+    public virtual DbSet<CleaningInstrument> CleaningInstrument { get; set; }
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/HotelDatabaseImplement.csproj b/Hotel/HotelDatabaseImplement/HotelDatabaseImplement.csproj
index 132c02c..0018b83 100644
--- a/Hotel/HotelDatabaseImplement/HotelDatabaseImplement.csproj
+++ b/Hotel/HotelDatabaseImplement/HotelDatabaseImplement.csproj
@@ -6,4 +6,18 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Folder Include="Implements" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0-preview.2.23128.3" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0-preview.2.23128.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\HotelContracts\HotelContracts.csproj" />
+    <ProjectReference Include="..\HotelDataModels\HotelDataModels.csproj" />
+  </ItemGroup>
+
 </Project>
diff --git a/Hotel/HotelDatabaseImplement/Models/Cleaning.cs b/Hotel/HotelDatabaseImplement/Models/Cleaning.cs
new file mode 100644
index 0000000..9814039
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/Cleaning.cs
@@ -0,0 +1,87 @@
+using System.ComponentModel.DataAnnotations.Schema;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+
+namespace HotelDatabaseImplement.Models;
+
+public class Cleaning : ICleaningModel
+{
+    public int Id { get; set; }
+    public DateTime Date { get; set; }
+    public int RoomId { get; set; }
+
+    [ForeignKey("CleaningId")]
+    public virtual List<CleaningInstrument> CleaningInstrument { get; set; } = new();
+    private Dictionary<int, ICleaningInstrumentsModel>? _cleaningInstruments = null;
+    [NotMapped]
+    public Dictionary<int, ICleaningInstrumentsModel> CleaningInstruments {
+        get
+        {
+            _cleaningInstruments ??= CleaningInstrument
+                .ToDictionary(
+                    x => x.CleaningInstrumentsId, 
+                    x => x.CleaningInstruments as ICleaningInstrumentsModel
+                    );
+            return _cleaningInstruments;
+        } 
+    }
+
+    public static Cleaning Create(HotelDataBase dataBase, CleaningBindingModel model)
+    {
+        return new Cleaning
+        {
+            Id = model.Id,
+            Date = model.Date,
+            CleaningInstrument = model.CleaningInstruments.Select(
+                x => new CleaningInstrument 
+                {
+                    CleaningInstruments = dataBase.CleaningInstruments.First(y => y.Id == x.Key) 
+                }).ToList()
+        };
+    }
+
+    public void Update(CleaningBindingModel model)
+    {
+        Date = model.Date;
+    }
+
+    public void UpdateCleaningInstruments(HotelDataBase dataBase, CleaningBindingModel model)
+    {
+        var cleaningInstruments = dataBase.CleaningInstrument
+            .Where(x => x.CleaningId == model.Id)
+            .ToList();
+        
+        dataBase.CleaningInstrument.RemoveRange(
+            cleaningInstruments.Where(x => !model.CleaningInstruments.ContainsKey(x.CleaningInstrumentsId))
+        );
+        dataBase.SaveChanges();
+        foreach (var toUpdate in cleaningInstruments)
+        {
+            model.CleaningInstruments.Remove(toUpdate.CleaningInstrumentsId);
+        }
+
+        dataBase.SaveChanges();
+
+        var cleaning = dataBase.Cleanings.First(x => x.Id == Id);
+        foreach (var cleaningInstrument in model.CleaningInstruments)
+        {
+            dataBase.CleaningInstrument.Add(new CleaningInstrument
+            {
+                Cleaning = cleaning,
+                CleaningInstruments = dataBase.CleaningInstruments
+                    .First(x => x.Id == cleaningInstrument.Key)
+            });
+            dataBase.SaveChanges();
+        }
+
+        _cleaningInstruments = null;
+    }
+
+    public CleaningViewModel GetView => new CleaningViewModel
+    {
+        Id = Id,
+        Date = Date,
+        CleaningInstruments = CleaningInstruments
+    };
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/CleaningInstrument.cs b/Hotel/HotelDatabaseImplement/Models/CleaningInstrument.cs
new file mode 100644
index 0000000..754e12c
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/CleaningInstrument.cs
@@ -0,0 +1,11 @@
+namespace HotelDatabaseImplement.Models;
+
+public class CleaningInstrument
+{
+    public int Id { get; set; }
+    public int CleaningId { get; set; }
+    public int CleaningInstrumentsId { get; set; }
+
+    public virtual Cleaning Cleaning { get; set; } = new();
+    public virtual CleaningInstruments CleaningInstruments { get; set; } = new();
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/CleaningInstruments.cs b/Hotel/HotelDatabaseImplement/Models/CleaningInstruments.cs
new file mode 100644
index 0000000..ff2c8d4
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/CleaningInstruments.cs
@@ -0,0 +1,41 @@
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+
+namespace HotelDatabaseImplement.Models;
+
+public class CleaningInstruments : ICleaningInstrumentsModel
+{
+    public int Id { get; set; }
+    public string Type { get; set; }
+
+    public static CleaningInstruments Create(CleaningInstrumentsBindingModel model)
+    {
+        return new CleaningInstruments
+        {
+            Id = model.Id,
+            Type = model.Type
+        };
+    }
+
+    public static CleaningInstruments Create(CleaningInstrumentsViewModel model)
+    {
+        return new CleaningInstruments
+        {
+            Id = model.Id,
+            Type = model.Type
+        };
+    }
+
+    public void Update(CleaningInstrumentsBindingModel? model)
+    {
+        if (model == null) return;
+        Type = model.Type;
+    }
+
+    public CleaningInstrumentsViewModel GetView => new CleaningInstrumentsViewModel
+    {
+        Id = Id,
+        Type = Type
+    };
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/Guest.cs b/Hotel/HotelDatabaseImplement/Models/Guest.cs
new file mode 100644
index 0000000..84f74f1
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/Guest.cs
@@ -0,0 +1,55 @@
+using System.ComponentModel.DataAnnotations;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+
+namespace HotelDatabaseImplement.Models;
+
+public class Guest : IGuestModel
+{
+    public int Id { get; set; }
+    [Required]
+    public string Name { get; set; }
+    [Required]
+    public string SecondName { get; set; }
+    [Required]
+    public string LastName { get; set; }
+
+    public static Guest? Create(GuestBindingModel? model)
+    {
+        if (model == null) return null;
+        return new Guest
+        {
+            Id = model.Id,
+            Name = model.Name,
+            LastName = model.LastName,
+            SecondName = model.SecondName
+        };
+    }
+
+    public static Guest Create(GuestViewModel model)
+    {
+        return new Guest
+        {
+            Id = model.Id,
+            Name = model.Name,
+            LastName = model.LastName,
+            SecondName = model.SecondName
+        };
+    }
+
+    public void Update(GuestBindingModel model)
+    {
+        Name = model.Name;
+        LastName = model.LastName;
+        SecondName = model.SecondName;
+    }
+
+    public GuestViewModel GetView => new GuestViewModel
+    {
+        Id = Id,
+        Name = Name,
+        LastName = LastName,
+        SecondName = SecondName
+    };
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/Maitre.cs b/Hotel/HotelDatabaseImplement/Models/Maitre.cs
new file mode 100644
index 0000000..be2b60b
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/Maitre.cs
@@ -0,0 +1,67 @@
+using System.ComponentModel.DataAnnotations;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+
+namespace HotelDatabaseImplement.Models;
+
+public class Maitre : IMaitreModel
+{
+    public int Id { get; set; }
+    [Required]
+    public string Name { get; set; }
+    [Required]
+    public string SecondName { get; set; }
+    [Required]
+    public string LastName { get; set; }
+    [Required]
+    public string Login { get; set; }
+    [Required]
+    public string Password { get; set; }
+
+    public static Maitre Create(MaitreBindingModel model)
+    {
+        return new Maitre
+        {
+            Id = model.Id,
+            Name = model.Name,
+            SecondName = model.SecondName,
+            LastName = model.LastName,
+            Login = model.Login,
+            Password = model.Password
+        };
+    }
+
+    public static Maitre Create(MaitreViewModel model)
+    {
+        return new Maitre
+        {
+            Id = model.Id,
+            Name = model.Name,
+            SecondName = model.SecondName,
+            LastName = model.LastName,
+            Login = model.Login,
+            Password = model.Password
+        };
+    }
+
+    public void Update(MaitreBindingModel? model)
+    {
+        if (model == null) return;
+        Name = model.Name;
+        SecondName = model.SecondName;
+        LastName = model.LastName;
+        Login = model.Login;
+        Password = model.Password;
+    }
+
+    public MaitreViewModel GetViewModel => new MaitreViewModel
+    {
+        Id = Id,
+        Name = Name,
+        SecondName = SecondName,
+        LastName = LastName,
+        Login = Login,
+        Password = Password
+    };
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/Reservation.cs b/Hotel/HotelDatabaseImplement/Models/Reservation.cs
new file mode 100644
index 0000000..992288f
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/Reservation.cs
@@ -0,0 +1,91 @@
+using System.ComponentModel.DataAnnotations.Schema;
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+
+namespace HotelDatabaseImplement.Models;
+
+public class Reservation : IReservationModel
+{
+    public int Id { get; set; }
+    public DateTime StartDate { get; set; }
+    public DateTime EndDate { get; set; }
+    public int GuestId { get; set; }
+    public int MaitreId { get; set; }
+    
+    [ForeignKey("RoomId")]
+    public virtual List<ReservationRoom> Rooms { get; set; } = new();
+
+    private Dictionary<int, IRoomModel>? _reservationsRooms = null;
+    public Dictionary<int, IRoomModel> ReservationsRooms
+    {
+        get
+        {
+            _reservationsRooms ??= Rooms
+                .ToDictionary(record => record.RoomId, room => room.Room as IRoomModel);
+            return _reservationsRooms;
+        }
+    }
+
+    public static Reservation? Create(HotelDataBase dataBase, ReservationBindingModel model)
+    {
+        return new Reservation
+        {
+            Id = model.Id,
+            StartDate = model.StartDate,
+            EndDate = model.EndDate,
+            GuestId = model.GuestId,
+            MaitreId = model.MaitreId,
+            Rooms = model.ReservationsRooms.Select(x => new ReservationRoom
+            {
+                Room = dataBase.Rooms.First(y => y.Id == x.Key)
+            }).ToList()
+        };
+    }
+
+    public void Update(ReservationBindingModel model)
+    {
+        StartDate = model.StartDate;
+        EndDate = model.EndDate;
+    }
+
+    public void UpdateRooms(HotelDataBase dataBase, ReservationBindingModel model)
+    {
+        var rooms = dataBase.ReservationRooms
+            .Where(x => x.ReservationId == model.Id)
+            .ToList();
+        dataBase.ReservationRooms.RemoveRange(
+            rooms.Where(x => !model.ReservationsRooms.ContainsKey(x.RoomId))
+            );
+
+        foreach (var toUpdate in rooms)
+        {
+            model.ReservationsRooms.Remove(toUpdate.RoomId);
+        }
+
+        dataBase.SaveChanges();
+
+        var reservation = dataBase.Reservations.First(x => x.Id == Id);
+        foreach (var reservationRoom in model.ReservationsRooms)
+        {
+            dataBase.ReservationRooms.Add(new ReservationRoom
+            {
+                Room = dataBase.Rooms.First(x => x.Id == reservationRoom.Key),
+                Reservation = reservation
+            });
+            dataBase.SaveChanges();
+        }
+
+        _reservationsRooms = null;
+    }
+
+    public ReservationViewModel GetView => new ReservationViewModel
+    {
+        Id = Id,
+        StartDate = StartDate,
+        EndDate = EndDate,
+        GuestId = GuestId,
+        MaitreId = MaitreId,
+        ReservationsRooms = ReservationsRooms
+    };
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/ReservationRoom.cs b/Hotel/HotelDatabaseImplement/Models/ReservationRoom.cs
new file mode 100644
index 0000000..03e17df
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/ReservationRoom.cs
@@ -0,0 +1,11 @@
+namespace HotelDatabaseImplement.Models;
+
+public class ReservationRoom
+{
+    public int Id { get; set; }
+    public int ReservationId { get; set; }
+    public int RoomId { get; set; }
+
+    public virtual Room Room { get; set; } = new();
+    public virtual Reservation Reservation { get; set; } = new();
+}
\ No newline at end of file
diff --git a/Hotel/HotelDatabaseImplement/Models/Room.cs b/Hotel/HotelDatabaseImplement/Models/Room.cs
new file mode 100644
index 0000000..bdd6a25
--- /dev/null
+++ b/Hotel/HotelDatabaseImplement/Models/Room.cs
@@ -0,0 +1,49 @@
+using HotelContracts.BindingModels;
+using HotelContracts.ViewModels;
+using HotelDataModels.Models;
+
+namespace HotelDatabaseImplement.Models;
+
+public class Room : IRoomModel
+{
+    public int Id { get; set; }
+    public string Type { get; set; }
+    public double Cost { get; set; }
+
+    public virtual Reservation Reservation { get; set; } = new();
+
+    public static Room? Create(RoomBindingModel? model)
+    {
+        if (model == null) return null;
+        return new Room
+        {
+            Id = model.Id,
+            Type = model.Type,
+            Cost = model.Cost
+        };
+    }
+
+    public static Room Create(RoomViewModel model)
+    {
+        return new Room
+        {
+            Id = model.Id,
+            Type = model.Type,
+            Cost = model.Cost
+        };
+    }
+
+    public void Update(RoomBindingModel? model)
+    {
+        if (model == null) return;
+        Type = model.Type;
+        Cost = model.Cost;
+    }
+
+    public RoomViewModel GetView => new RoomViewModel
+    {
+        Id = Id,
+        Type = Type,
+        Cost = Cost
+    };
+}
\ No newline at end of file