EF HasNoKey

Kopyala

                        public class ExampleDbContext:DbContext
{

  protected override void OnModelCreating(ModelBuilder modelBuilder)
   {
      base.OnModelCreating(modelBuilder);
      modelBuilder.Entity<LOG>().HasNoKey().ToTable("LOG"); //No primay key
   }

}
                    

void OnModelCreating(ModelBuilder modelBuilder)

• EF Core calls this method in the class that derives from the DbContext class.
• Here you can make table-class mappings, relationships, column settings, etc.

Kopyala

                        protected override void OnModelCreating(ModelBuilder modelBuilder)
                    

base.OnModelCreating(modelBuilder)

• It also calls the OnModelCreating of the superclass (DbContext).
• So you don't disturb EF's own default settings.

modelBuilder.Entity<LOG>()

• You are preparing to connect the entity class named LOG to a table in the database.
• So even though you have defined DbSet, you are doing the detailed configuration here.

.HasNoKey()

• Normally, EF Core expects a Primary Key (Id field) for each entity.
• You're saying, "This entity doesn't have a key field, so don't track changes; use it only for queries."