The primary key used in JADE tables is OID for overwrite tables.
The default primary keys for historical tables are oid, _edition, _operation, and _tranid. You can add _timestamp as a primary key for historical tables, either in addition to or as a substitute for _tranid. The key order is as follows.
[_tranid], [_timestamp], [oid], [_edition], [_operation]
You can specify an alternative primary key for No Delete tables in the Relational Population Service wizard. For details, see "