Question

I have desktop application and the database on desktop too (sqlite). I have all validations I the application. Transactions are required in this case?

Thanks

Answer 1

Transactions are useful to ensure that every part between begin transaction and commit have to run without an error. If a error occurs the whole query has no effect.

This has nothing to do with validation. You can get errors like timeouts.

All the work in the transaction is treated as a single unit. Either it is all performed or none of it is. Consistent means that a completed transaction leaves the database in a consistent internal state.

You can find more information on SQL Team – Introduction to Transactions