× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. MIDRANGE-L
  3. March 2008

RE: Why non-keyed PFs back then? Why today? ( was Re: Which of the SYSIBMtables/views show the row count for )

I can't think of a reason I'd design a table today (on any platform)
that didn't include a primary key. If there is no pure business key,
make a surrogate key of an integer. Most DB modeling apps will want to
see a primary key when displaying relationships, and most FK
relationships will be to the primary key (can you even do non-PK
relationships, not sure).

At any rate, I'd be shocked if someone could come up with a good reason*
to define a table today w/out a primary key.

-Walden

* "Good reason" does not include: Because that's how we do it, or
Because our old-timers wouldn't understand it. I mean a good real
technical reason.


As an Amazon Associate we earn from qualifying purchases.

This thread ...
Follow-Ups:
Replies:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.