"Ann W. Harrison" <aharrison@...> wrote:

>
> Firebird supports READ COMMITTED,

Correct, but without cursor stability.

> REPEATABLE READ (in concurrency mode)

As you've already explained, our concurrency mode is not RR per se, although
it's something alike.

> and SERIALIZABLE (in consistency aka table locking mode).

AFAIU, we can only emulate SERIALIZABLE via isc_tpb_consistency + all tables
explicitly reserved + isc_tpb_wait. The default behaviour is not
serializable.


Dmitry