diff --git a/CaseAccounting/CaseAccountingContracts/ViewModels/RoleViewModel.cs b/CaseAccounting/CaseAccountingContracts/ViewModels/RoleViewModel.cs
new file mode 100644
index 0000000..c419630
--- /dev/null
+++ b/CaseAccounting/CaseAccountingContracts/ViewModels/RoleViewModel.cs
@@ -0,0 +1,18 @@
+using CaseAccountingDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingContracts.ViewModels
+{
+    public class RoleViewModel : IRoleModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Название роли")]
+        public string Name { get; set; } = string.Empty;
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDataBaseImplement.csproj b/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDataBaseImplement.csproj
index f2c9493..c66d80b 100644
--- a/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDataBaseImplement.csproj
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/CaseAccountingDataBaseImplement.csproj
@@ -8,7 +8,11 @@
 
   <ItemGroup>
     <Folder Include="Implements\" />
-    <Folder Include="Models\" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\CaseAccountingContracts\CaseAccountingContracts.csproj" />
+    <ProjectReference Include="..\CaseAccountingDataModels\CaseAccountingDataModels.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Case.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Case.cs
new file mode 100644
index 0000000..91d5aad
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Case.cs
@@ -0,0 +1,91 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class Case : ICaseModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        [Required]
+        public string Applicant { get; set; } = string.Empty;
+
+        [Required]
+        public string Defendant { get; set; } = string.Empty;
+
+        [Required]
+        public string Annotation { get; set; } = string.Empty;
+
+        [Required]
+        public DateTime Date { get; set; }
+
+        [Required]
+        public int SpecializationId { get; set; }
+
+        [Required]
+        public int UserId { get; set; }
+
+        [ForeignKey("CaseId")]
+        public virtual List<Hearing> Hearings { get; set; } = new();
+
+        [ForeignKey("CaseId")]
+        public virtual List<CaseLawyer> Lawyers { get; set; } = new();
+
+        [ForeignKey("CaseId")]
+        public virtual List<CaseDeal> Deals { get; set; } = new();
+
+        public static Case? Create(CaseBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Case()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Applicant = model.Applicant,
+                Defendant = model.Defendant,
+                Annotation = model.Annotation,
+                Date = model.Date,
+                SpecializationId = model.SpecializationId,
+                UserId = model.UserId
+            };
+        }
+
+        public void Update(CaseBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Annotation = model.Annotation;
+            Date = model.Date;
+        }
+
+        public CaseViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Applicant = Applicant,
+            Defendant = Defendant,
+            Annotation = Annotation,
+            Date = Date,
+            SpecializationId = SpecializationId,
+            UserId = UserId
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/CaseDeal.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/CaseDeal.cs
new file mode 100644
index 0000000..be1734f
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/CaseDeal.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class CaseDeal
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int CaseId { get; set; }
+        public virtual Case Case { get; set; } = new();
+
+        [Required]
+        public int DealId { get; set; }
+        public virtual Deal Deal { get; set; } = new();
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/CaseLawyer.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/CaseLawyer.cs
new file mode 100644
index 0000000..f274a4a
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/CaseLawyer.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class CaseLawyer
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int CaseId { get; set; }
+        public virtual Case Case { get; set; } = new();
+
+        [Required]
+        public int LawyerId { get; set; }
+        public virtual Lawyer Lawyer { get; set; } = new();
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Contract.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Contract.cs
new file mode 100644
index 0000000..7438ced
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Contract.cs
@@ -0,0 +1,73 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.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 CaseAccountingDataBaseImplement.Models
+{
+    public class Contract : IContractModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Service { get; set; } = string.Empty;
+
+        [Required]
+        public decimal Coast { get; set; }
+
+        [Required]
+        public DateTime Date { get; set; }
+
+        [Required]
+        public int UserId { get; set; }
+
+        [ForeignKey("ContractId")]
+        public virtual List<LawyerContracts> LawyerContracts { get; set; } = new();
+
+        [ForeignKey("ContractId")]
+        public virtual List<DealContract> DealContracts { get; set; } = new();
+
+        public static Contract? Create(ContractBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Contract()
+            {
+                Id = model.Id,
+                Service = model.Service,
+                Coast = model.Coast,
+                Date = model.Date,
+                UserId = model.UserId
+            };
+        }
+
+        public void Update(ContractBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Service = model.Service;
+            Coast = model.Coast;
+            Date = model.Date;
+        }
+
+        public ContractViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Service = Service,
+            Coast = Coast,
+            Date = Date,
+            UserId = UserId
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Deal.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Deal.cs
new file mode 100644
index 0000000..ea1d6d5
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Deal.cs
@@ -0,0 +1,72 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.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 CaseAccountingDataBaseImplement.Models
+{
+    public class Deal : IDealModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Subject { get; set; } = string.Empty;
+
+        [Required]
+        public string Responsibilities { get; set; } = string.Empty;
+
+        [Required]
+        public DateTime Date { get; set; }
+
+        [Required]
+        public int UserId { get; set; }
+
+        [ForeignKey("DealId")]
+        public virtual List<CaseDeal> CaseDeals { get; set; } = new();
+
+        [ForeignKey("DealId")]
+        public virtual List<DealContract> Contracts { get; set; } = new();
+
+        public static Deal? Create(DealBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Deal()
+            {
+                Id = model.Id,
+                Subject = model.Subject,
+                Responsibilities = model.Responsibilities,
+                Date = model.Date,
+                UserId = model.UserId,
+            };
+        }
+
+        public void Update(DealBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Subject = model.Subject;
+            Responsibilities = model.Responsibilities;
+            Date = model.Date;
+        }
+
+        public DealViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Subject = Subject,
+            Responsibilities = Responsibilities,
+            Date = Date,
+            UserId = UserId
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/DealContract.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/DealContract.cs
new file mode 100644
index 0000000..0b55ee2
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/DealContract.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class DealContract 
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int DealId { get; set; }
+        public virtual Deal Deal { get; set; } = new();
+
+        [Required]
+        public int ContractId { get; set; }
+        public virtual Contract Contract { get; set; } = new();
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Hearing.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Hearing.cs
new file mode 100644
index 0000000..21af1c6
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Hearing.cs
@@ -0,0 +1,67 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class Hearing : IHearingModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Information { get; set; } = string.Empty;
+
+        [Required]
+        public DateTime Date { get; set; }
+
+        [Required]
+        public int CaseId { get; set; }
+        public virtual Case Case { get; set; } = new();
+
+        [Required]
+        public int UserId { get; set; }
+        public virtual User User { get; set; } = new();
+
+        public static Hearing? Create (HearingBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Hearing()
+            {
+                Id = model.Id,
+                Information = model.Information,
+                Date = model.Date,
+                CaseId = model.CaseId,
+                UserId = model.UserId
+            };
+        }
+
+        public void Update (HearingBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Information = model.Information;
+            Date = model.Date;
+        }
+
+        public HearingViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Information = Information,
+            Date = Date,
+            CaseId = CaseId,
+            UserId = UserId
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs
new file mode 100644
index 0000000..f97444c
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Lawyer.cs
@@ -0,0 +1,86 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.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 CaseAccountingDataBaseImplement.Models
+{
+    public class Lawyer : ILawyerModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        [Required]
+        public string Surname { get; set; } = string.Empty;
+
+        [Required]
+        public string Patronymic { get; set; } = string.Empty;
+
+        [Required]
+        public int Experience { get; set; }
+
+        [Required]
+        public int SpecializationId { get; set; }
+        public virtual Specialization Specialization { get; set; } = new();
+
+        [Required]
+        public int UserId { get; set; }
+        public virtual User User { get; set; } = new();
+
+        [ForeignKey("LawyerId")]
+        public virtual List<CaseLawyer> CaseLawyers { get; set; } = new();
+
+        [ForeignKey("LawyerId")]
+        public virtual List<LawyerContracts> Contracts { get; set; } = new();
+
+        public static Lawyer? Create(LawyerBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Lawyer()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Surname = model.Surname,
+                Patronymic = model.Patronymic,
+                Experience = model.Experience,
+                SpecializationId = model.SpecializationId,
+                UserId = model.UserId
+            };
+        }
+
+        public void Update(LawyerBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Surname = model.Surname;
+            Patronymic = model.Patronymic;
+            Experience = model.Experience;
+            SpecializationId = model.SpecializationId;
+        }
+
+        public LawyerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Surname = Surname,
+            Patronymic = Patronymic,
+            Experience = Experience,
+            SpecializationId = SpecializationId,
+            UserId = UserId
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/LawyerContracts.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/LawyerContracts.cs
new file mode 100644
index 0000000..187e68d
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/LawyerContracts.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class LawyerContracts
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int LawyerId { get; set; }
+        public virtual Lawyer Lawyer { get; set; } = new();
+
+        [Required]
+        public int ContractId { get; set; }
+        public virtual Contract Contract { get; set; } = new();
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Role.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Role.cs
new file mode 100644
index 0000000..2c80c8b
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Role.cs
@@ -0,0 +1,53 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+using System.Threading.Tasks.Dataflow;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class Role : IRoleModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        [ForeignKey("RoleId")]
+        public virtual List<User> Users { get; set; } = new();
+
+        public static Role? Create(RoleBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Role()
+            {
+                Id = model.Id,
+                Name = model.Name,
+            };
+        }
+        public void Update(RoleBindingModel? model) 
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+        }
+
+        public RoleViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/Specialization.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Specialization.cs
new file mode 100644
index 0000000..31f373b
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/Specialization.cs
@@ -0,0 +1,63 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Net;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CaseAccountingDataBaseImplement.Models
+{
+    public class Specialization : ISpecializationModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        [Required]
+        public int UserId { get; set; }
+        public virtual User User { get; set; } = new();
+
+        [ForeignKey("SpecializationId")]
+        public virtual List<Lawyer> Lawyers { get; set; } = new();
+
+        [ForeignKey("SpecializationId")]
+        public virtual List<Case> Cases { get; set; } = new();
+
+        public static Specialization? Create (SpecializationBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Specialization()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                UserId = model.UserId,
+            };
+        }
+
+        public void Update(SpecializationBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+        }
+
+        public SpecializationViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            UserId = UserId
+        };
+    }
+}
diff --git a/CaseAccounting/CaseAccountingDataBaseImplement/Models/User.cs b/CaseAccounting/CaseAccountingDataBaseImplement/Models/User.cs
new file mode 100644
index 0000000..d0a40cb
--- /dev/null
+++ b/CaseAccounting/CaseAccountingDataBaseImplement/Models/User.cs
@@ -0,0 +1,78 @@
+using CaseAccountingContracts.BindingModels;
+using CaseAccountingContracts.ViewModels;
+using CaseAccountingDataModels.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 CaseAccountingDataBaseImplement.Models
+{
+    public class User : IUserModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string Login { get; set; } = string.Empty;
+
+        [Required]
+        public string Password { get; set; } = string.Empty;
+
+        [Required]
+        public int RoleId { get; set; }
+        public virtual Role Role { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Hearing> Hearings { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Case> Cases { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Specialization> Specializations { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Lawyer> Lawyers { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Deal> Deals { get; set; } = new();
+
+        [ForeignKey("UserId")]
+        public virtual List<Contract> Contracts { get; set; } = new();
+
+        public static User? Create(UserBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new User()
+            {
+                Id = model.Id,
+                Login = model.Login,
+                Password = model.Password,
+                RoleId = model.RoleId
+            };
+        }
+
+        public void Update(UserBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Password = model.Password;
+        }
+
+        public UserViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Login = Login,
+            Password = Password,
+            RoleId = RoleId,
+        };
+    }
+}