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What is the difference between Implicit and Explicit transaction in Sql Server 2008?
What happens in TransactionScope background? I’m using TransactionScope but in Sql server profiler I don’t see “Begin transaction…” statement.
How does it work?
Basically, in c# when you set the TransactionScope to Implicit, it calls the SQL Server SET command to put the connection in IMPLICIT_TRANSACTIONS mode. Anything that you do (using one of the commands listed in the 2nd link) starts a transaction that is kept open until a commit is issued. If no commit is issued at the end of a connection, an implicit ROLLBACK is performed.
This differs from the OFF setting, which also puts every statement into a transaction – the difference is that in the OFF mode (therefore transactions are explicit), each transaction (singular statement) is immediately committed.