I'm starting with EF4 code and am like it so far. However, I'm having a hard time mapping an object to a table with a composite primary key....The setup I've tested seems as follows:...public SubscriptionUserConfiguration()
{
Property(u => u.SubscriptionID).IsIdentity();
Property(u => u.UserName).IsIdentity();
...
Entity Framework 4.1 is giving me this nullable column error notice even though the column is not truly nullable:...Non-nullable column MyView.RunningTotal in table TransactionListView
is mapped to a nullable entity property.
...However, as you can see from the screenshots below, neither the entity property nor the column are nullable. So why is t...
My class is called ...Sale.......public class Sale
{
public int Id { get; set; }
public string TrNo { get; set; }
public DateTime Date { get; set; }
public int CustomerID { get; set; }
public ObservableCollection<SaleDetail> SaleDetails { get; set; }
}
...I also want the database to have the...Id...
as the...Auto Increment...
t...
When mapping a 1..0 or 1 connection in EF, the dependent relationship's primary key is anticipated to be the principal's foreign key....This means that in your situation, your...Access...
entity should dispense with...AccessId...
make the major key...UserId...
be the key....Your best option for a solution will have to be to make the connection a 1....
Entity Framework 7 now makes this feasible (that is, EF Core 1.0)....From ...Unique Restrictions (i.e. Candidate Key) Support... of the.Net Entity Framework User Voice:...Support for this feature was added in EF Core 1.0 and we don’t have plans to add it in the EF6 codebase.
I am aware of ...this..., which stipulates that a primary key with a non-clustered index cannot be created using code first. Is it still the situation?...I would prefer to define via EntityTypeConfiguration that one column (int) has a clustered index and my primary key (Guid) has a non-clustered index.
I believe the best way to accomplish it is to perform it in EF code first, using either attributes or fluent api:...mapping of a foreign key to a non-primary key in Entity Framework 6.1.3...Is it feasible to convert an Entity Framework 5.0 composite foreign key to a non-primary key?...First mapping in Entity Framework Code without a foreign key...H...
