code-first

I created a post with an issue and another issue . These can be looked at for references but i consider them as handled. My question arising from these issues and the action i (need or not need) to apply bothers me because i don't quite understand EF its behavior and expectations. I have a Product, PurchasePrice and SalesPrice entity where my initial thought was that 1 Product can have multiple PurchasePrices but that 1 PurchasePrice only can exist in 1 Product (same for SalesPrice). Therefore these relations: // NOTE that BaseEntity just has a "int ID" prop and datetimes/stamps public class

I am getting this error when generate Database from Entity Framework Code First. I didn´t see any problem with script: alter table [dbo].[Votes] add constraint [Post_Votes] foreign key ([Post_Id]) references [dbo].[Posts]([Id]) on delete cascade; alter table [dbo].[Votes] add constraint [User_Votes] foreign key ([Voter_Id]) references [dbo].[Users]([Id]) on delete cascade; Each reference is to different tables! I can have just one on delete cascade per table? Edit: I think I found the problem, the bug is EF: If I have 3 tables: Users, Posts and Votes. And the relations: Post.AuthorId -> User

I am using VS 2010 and Entity Framework code first (version 6). I have two entities each in its own context and I want to create a one-to-many relationship between them. Context 1 has the following entity: public class MyTrust { public int MyTrustID { get; set; } public string MyTrustName { get; set; } } and Context 2 has the following entity: public class MyLocation { public int MyLocationID { get; set; } public int MyTrustID { get; set; } public virtual MyTrust MyTrust { get; set; } } with the following Fluent API modelBuilder.Entity<MyLocation>() .HasRequired(m => m.MyTrust); The migration

With the following simple entity class, EF4.1 Code-First will create Clustered Index for the PK UserId column when intializing the database. public class User { [Key] public int UserId { get; set; } public int AppId { get; set; } public string UserName { get; set; } } For performance sake, my design goals is to keep the generated Users table physical Clustered according to the AppId coulmn not to the PK. On my Initializer class I've tried to manually drop the autogenerated PK clustered index and create whatever clustered index I need, but no clue here to predict the autogenerated name PK_

Our project uses Entity Framework Code First. We wish to have an instance where a very simple POCO represents many tables in the database. It is part of a horizontal partitioning strategy in SQL Azure. SQL Azure does not support file groups, thus it does not support typical partitioning. There are going to be a very large numbers of tables, so using a UNION ALL view as a partitioned view via CHECK CONSTRAINTs on the base tables will not be feasible. Thus, we would prefer to peform the mapping as needed at runtime. However, this occurs in the OnModelCreating event of the DbContext class via

i wnat to validate the datetime, My Code is: [Range(typeof(DateTime), DateTime.Now.AddYears(-65).ToShortDateString(), DateTime.Now.AddYears(-18).ToShortDateString(), ErrorMessage = "Value for {0} must be between {1} and {2}")] public DateTime Birthday { get; set; } but i get the error: An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type please help me? mfanto This means the values for the Range attribute can't be determined at some later time, it has to be determined at compile time. DateTime.Now isn't a constant,