[GENERAL] Set valued attributes ?

2000-07-25 Thread Nico D
Does anyone know how to make an attribute a collection of OIDs? I haven't found any reference of this object-oriented feature in Postgres online manuals. Please, let me know any hints/links or anything that could help me doing the following: === Assume that each row of tables is identified by OI

[GENERAL] ORDBMS vs OODBMS

2000-06-29 Thread Nico D
Hello folks I'm an engineering student and I would be very interested to learn the pros and cons between these two DataBases: - Versant : commercial OODBMS (Object-Oriented) - PostgreSQL : open source ORDBMS (Object-Relational) (Other DB like Oracle are ERDBMS and not ORDBMS if I guess right)