> I'm designing a database schema and have questions about OID.
>
> First, I assume that OID are system assigned? [yes]
yes - correct assumption
> Second, Can I use OID as a primary key? [no]
yes(qualified) - incorrect assumption
Currently PostgreSQL doesn't really do anything special with primary key
columns, so you can achieve the same affect, by declaring a UNIQUE INDEX
on the same columns.
> Third, Is the OID invariant under an import/export process? [no]
yes(qualified) - incorrect assumption
see: pg_dump --help (specifically the -o option).
> Fourth, Can I create table with an OID type for referencing another
> table? [no]
yes - incorrect assumption
This is part of the reason for the -o switch in pg_dump.
> I puy my assumed answers in brackets. Please let me know if I
> am mistaken.
Well, only 75%.
> Thanks!
You're welcome.
> Clark
-DEJ