RE: [GENERAL] OID

>I'm designing a database schema and have questions about OID.

> First, I assume that OID are system assigned? [yes]

> Second, Can I use OID as a primary key? [no]

Perhaps in ignorance, I have used the system assigned OID
as a non-topical primary key. Instead of using the
"PRIMARY KEY" key words, I explicitly created an index
on the OID column.

> Third, Is the OID invariant under an import/export process? [no]

> Fourth, Can I create table with an OID type for referencing
> another table? [no]

You can create a row of type OID. I have used them
as foreign keys the times I used the OID field as the
primary key.