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From: davidm@cimshop.UUCP (David Masterson)
Newsgroups: comp.databases
Subject: Re: Ingres and referential integrities
Message-ID: <442@cimshop.UUCP>
Date: 24 Jul 89 17:01:36 GMT
References: <3081@rti.UUCP> <9653@alice.UUCP> <607@daitc.daitc.mil>
Distribution: comp
Organization: Consilium Mt. View CA
Lines: 12
In-reply-to: jkrueger@daitc.daitc.mil's message of 22 Jul 89 19:07:55 GMT


>...  How do current commercial
>relational DBMS define the integrity "no person can be his own
>ancestor or descendent"?

I'm curious, Jon, can you give an example of how Ingres implements "a more
general way" of referential integrity (hope I'm not paraphrasing too much).
Can it be done at the DBMS level or must it be done by application program?
Oh, is it v5 or v6?

David Masterson					(preferred)
uunet!cimshop!davidm		or		DMasterson@cup.portal.com