Is This Behavior Documented?

And if so, where?? I have a table with one column of datatype serial. The table has 2 rows when I execute the following SQL in DBAccess: set isolation to committed read;begin work; insert into table1 values (0); select count(*) from table1;rollback work; The 'select count(*)' line returns a value of 3. After this code has executed, a 'select count(*)' returns a value of 2, just as I would expect. Why does the select in the code given return a value of 3 when the isolation level is set to committed read and there are two committed rows and one uncommitted row? I assume it is because the same process that issued the insert is doing the select. Is this an implementation-dependent feature, a rule, or a bug? I'm running v7.11.x of the engine. Thanks for your help, M. Livenspargar