How to Decide to use Database Transactions

Question

How do you guys decide that you should be wrapping the sql in a transaction?

Please throw some light on this.

Cheers !!

Answer 1

if your have more than a single data modifying statement to execute to complete a task, all should be within a transaction.

This way, if the first one is successful, but any of the following ones has an error, you can rollback (undo) everything as if nothing was ever done.