Re: Pascal/Date

From: -CELKO- <jcelko212_at_earthlink.net>
Date: 4 Jan 2007 06:25:15 -0800
Message-ID: <1167920712.592115.127580_at_v33g2000cwv.googlegroups.com>

>> 'Now suppose the system supports two kinds of null, "value unknown" and "value does not apply" and four-valued logic (4VL), and suppose employee Joe's job is unknown. What do we do about Joe's commission? <<

That is Dr. Codd's RM2 (Relational Model Version 2) and to some extent the test for a created NULL in the current OLAP features in SQL. Received on Thu Jan 04 2007 - 15:25:15 CET

This message: [ Message body ]
Next message: -CELKO-: "Re: Curious SQL question"
Previous message: Bob Badour: "Re: Network Example: Sibling of Opposite Gender"
In reply to s.j.lagoe: "Re: Pascal/Date"
Next in thread: paul c: "Re: Pascal/Date"

Contemporary messages sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

Original text of this message