Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints
I make an outer join and executed successfully in the informix database but I get the following exception in my code:
informix
TransactionScope error in ambient transaction does not rollback the transaction
I use an ambient transaction like this :
Dispose the connection or Close the connection
Which one of the following two methods has better performance ?
open connection before every single nonquery or one connection for the whole?
If I have about 2000 record and I make a multiple insert. Which method has better performance than the other?