Thomas,

TS> - The term "REPEATABLE READ" isn't used in any isolation level related
TS> documents with Firebird/InterBase I've found

Now I see your point. Well it *is* mentioned in some slides I use at
classes but I guess they don't count much. :-)

TS> - Helen's book says (p. 523): "Mapping to the standard governance of
TS> REPEATABLE READ and SERIALIZABLE is not possible."

AFAIK:

Repeatable read = isc_tpb_concurrency
Serializable ~= isc_tpb_consistency

TS> So, where is the difference between SNAPSHOT and REPEATABLE READ. ;-)

I don't recognise the term "snapshot" in this context. Is it IBO
terminology?

Ciao
--
Nando Dessena
http://www.flamerobin.org