Re: Bidirectional Binary Self-Joins

On Mar 30, 12:04 pm, Bob Badour <bbad..._at_pei.sympatico.ca> wrote:
>
> It would use the equality operation to detect the duplicate. What's more
> disturbing is it would allow the following without complaint:
>
> { date=12-Dec, teamscores={(team=Calvin, score=31), (team=Hope, score=59) }}

Whether it complained or not would depend on the keys and other constraints.
In another subthread I proposed the following key:

  (date, π_team(teamscores))

Isn't that a kick?

Marshall Received on Sat Mar 31 2007 - 07:21:08 CEST