× 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. RPG400-L
  3. May 2006

Re: RPG IV not up to the task of reading and writing to DB files....

One situation: Relational Integrity: If you use zero as "no data" then you need to code a record with Zero as the key in the master file.
Other example: My table contains the time when the employee is souposed to arrive and the diference between that time and the real time he did arrive. Null is when he did not yet arrive or he is absent, zero: he got exactly on time. 

Shannon ODonnell wrote:
Charles, 
What is the advantage to having a NULL capable database field, as opposed
to, say, blanks?  Wouldn't that be easier?

I ask because I don't understand.

Thanks,

Shannon O'Donnell

As an Amazon Associate we earn from qualifying purchases.

This thread ...
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.