> 1. Speed
> 2. Data Reliability
The two above depend very much (IMHO) on SYSDBA's skills. IB and its
descendants has, probably, less options to tweak, or, more correctly, less
obvious ways to improve its performance.
OTOH, if you have strong theoretical RDBMS bacground and considerable
practical experience with either, you'll find that performance and
stability tips and tricks for IB and PGSQL are very similar.
> 3. Portability
Does that really matter? What are you going to port? The code of DBMS
server itself? Some of the accompanied tools? Your data? If you're going to
run a busy site with a huge DB, portability is the last thing to worry
about. It's more important, IMHO, to pick the right platform at design
stage.
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