This is true, although you're assuming that the inserts occur within a transaction - and this isn't necessarily the case.

It was the best fix I could come up with for a system which had to include support for Foxpro 2 (don't ask!) - which had no auto-ids and no transactional support.

I must confess I assumed you weren't working on a multi-user environment, as looking at the SQLite docs I see it doesn't support multi-user updates/inserts on a single database file.

update: Plus, thinking about it, in the situation you describe the A transaction should lock the sequence table until it is complete, and the B transaction would have to wait until A completed and removed the lock.

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