Bruce Momjian <bruce@momjian.us> writes:
> Here is how I think SQL-level row permissions would work:
> We already have an optional OID system column that can be specified
> during table creation (WITH OIDS). We could have another optional oid
> column (WITH ROW SECURITY) called security_context which would store the
> oid of the role that can see the row; if the oid is zero (InvalidOid),
> anyone can see it. SE-PostgreSQL would default to WITH ROW SECURITY and
> use the oid to look up strings in pg_security.
This is just a different syntax for KaiGai's label storage
implementation. It doesn't really answer any of the hard questions,
like what the heck is the behavior of foreign keys.
regards, tom lane