diff --git a/BlogPlatform/BlogPlatform/BlogPlatformDbContext.cs b/BlogPlatform/BlogPlatform/BlogPlatformDbContext.cs
new file mode 100644
index 0000000..7381616
--- /dev/null
+++ b/BlogPlatform/BlogPlatform/BlogPlatformDbContext.cs
@@ -0,0 +1,44 @@
+using BlogPlatform.Models;
+
+namespace BlogPlatform;
+
+using Microsoft.EntityFrameworkCore;
+
+
+public class BlogPlatformDbContext: DbContext
+{
+    public DbSet<Comment> Comments { get; set; }
+    public DbSet<Post> Posts { get; set; }
+    public DbSet<User> Users { get; set; }
+    
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        string connectionString =
+            "Server=romaric-thibault.fr;" +
+            "Database=BlogPlatform_cristiano;" +
+            "User Id=cristiano;" +
+            "Password=Onto9-Cage-Afflicted;" +
+            "TrustServerCertificate=True";
+        
+        optionsBuilder.UseSqlServer(connectionString);
+    }
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.Entity<Comment>()
+            .Property(comment => comment.CreatedAt)
+            .HasDefaultValueSql("getdate()")
+            .ValueGeneratedOnAdd();
+        
+        modelBuilder.Entity<Post>()
+            .Property(post => post.CreatedAt)
+            .HasDefaultValueSql("getdate()")
+            .ValueGeneratedOnAdd();
+        
+        modelBuilder.Entity<User>()
+            .Property(user => user.CreatedAt)
+            .HasDefaultValueSql("getdate()")
+            .ValueGeneratedOnAdd();
+    }
+}
\ No newline at end of file
diff --git a/BlogPlatform/BlogPlatform/Models/Comment.cs b/BlogPlatform/BlogPlatform/Models/Comment.cs
index eea75fe..f63d044 100644
--- a/BlogPlatform/BlogPlatform/Models/Comment.cs
+++ b/BlogPlatform/BlogPlatform/Models/Comment.cs
@@ -7,4 +7,10 @@ public class Comment
     [Key] public int Id { get; set; }
     [Required, Length(1,500)] public string? Content { get; set; }
     public DateOnly CreatedAt  { get; set; }
+    
+    [Required] public int PostId{ get; set; }
+    public Post? Post{ get; set; }
+    
+    [Required] public int UserId { get; set; }
+    public User? User{ get; set; }
 }
\ No newline at end of file
diff --git a/BlogPlatform/BlogPlatform/Models/Post.cs b/BlogPlatform/BlogPlatform/Models/Post.cs
index 8a73ec9..0311aa9 100644
--- a/BlogPlatform/BlogPlatform/Models/Post.cs
+++ b/BlogPlatform/BlogPlatform/Models/Post.cs
@@ -9,4 +9,9 @@ public class Post
     [Required] public string? Content { get; set; }
     [Required] public int Likes { get; set; }
     public DateOnly CreatedAt  { get; set; }
+    
+    public List<Comment>? Comments { get; set; }
+    
+    [Required] public int UserId { get; set; }
+    public User? User{ get; set; }
 }
\ No newline at end of file
diff --git a/BlogPlatform/BlogPlatform/Models/User.cs b/BlogPlatform/BlogPlatform/Models/User.cs
index 8c3ccd6..18dd138 100644
--- a/BlogPlatform/BlogPlatform/Models/User.cs
+++ b/BlogPlatform/BlogPlatform/Models/User.cs
@@ -11,5 +11,6 @@ public class User
     [Required,Length(24,24)] public string? Salt { get; set; }
     public DateOnly CreatedAt  { get; set; }
     
-    
+    public List<Comment>? Comments { get; set; }
+    public List<Post>? Posts { get; set; }
 }
\ No newline at end of file