Entity Framework CTP 4. “Cannot insert the value NULL into column” - Even though there is no NULL value

Question

Im using EF CTP 4. I have a simple console app (for testing purposes) that is using EF to insert some data into a SQL database.

I have come to a problem where by upo

Answer 1

It happened to me when I had a primary key missing on the respected column (the identity column) in the db's schema. I exported data between SQL servers, using SSMS Export tool and creating a new database, but didn't realize that it's exporting only the data, without keys.