diff --git "a/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/BloggingContext.cs" "b/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/BloggingContext.cs"
index 0499248..e095419 100644
--- "a/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/BloggingContext.cs"
+++ "b/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/BloggingContext.cs"
@@ -10,8 +10,8 @@ public class BloggingContext : DbContext
     //public static readonly BloggingContext Default = new BloggingContext();
     //public required DbSet<Blog> Blogs { get; set; } 
     //public required DbSet<Post>? Posts { get; set; }
-    public DbSet<Blog>? Blogs { get; set; }
-    public DbSet<Post>? Posts { get; set; }
+    public DbSet<Blog> Blogs { get; set; }
+    public DbSet<Post> Posts { get; set; }
     public string? DbPath { get; } = string.Empty;
 
     public BloggingContext()
@@ -42,6 +42,19 @@ public BloggingContext(BloggingContext context, string dbPath)
         DbPath = dbPath;
     }
 
+    public BloggingContext(string dbPath)
+    {
+        Initialize();
+        DbPath = dbPath;
+    }
+
+
+    protected virtual void Initialize()
+    {
+        Blogs = Set<Blog>();
+        Posts = Set<Post>();
+    }
+
     //public BloggingContext(string dbPath)
     //{
     //    DbPath = dbPath;
diff --git "a/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/Program.cs" "b/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/Program.cs"
index b451b1f..1f70eab 100644
--- "a/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/Program.cs"
+++ "b/\344\272\202\344\270\203\345\205\253\347\263\237/\344\272\202\344\270\203\345\205\253\347\263\237.DataAccessLayer/Program.cs"
@@ -25,6 +25,7 @@ public static async Task Main(string[] args)
         using (var scope = host.Services.CreateScope())
         {
             await using var db = new BloggingContext();
+            
             db.Database.EnsureCreated();
 
             // Note: This sample requires the database to be created before running.