• Subject: RE: Same field names
  • From: "Fisher, Don" <DRF@xxxxxxxxxxxxxxxx>
  • Date: Tue, 4 May 1999 12:39:48 -0400

Hmmm...I've learned something today.

In my opinion, however, using the same field name in multiple files causes
more problems then it solves, if any.  Even though the "PREFIX" keyword is
easy to use, it will cause difficulty analyzing programs if not applied

For example, one programmer may use the prefix "CM" for the customer master
file and another may use "CS".  If, however, the field names were unique to
each file, the need for using "PREFIX" disappears and every program is using
the same field names.

It is true that enforced programming standards could solve this problem, but
why go to the trouble of creating and enforcing such a standard when making
the field names unique makes it unnecessary?

Secondly, the use of "PREFIX" adds a step to program analysis.  Not only
must the analyst know the field names, but also the various prefixes used by
the program for each file.

Lastly, with ten character field names available, the last six to eight
could be the same name throughout the system with the first 2 to 4 used as a
file prefix.  Such a standard would, in my opinion, be easier to enforce and
you can still use query to extract the "field where used" information by
using the substring function.

Donald R. Fisher, III
Project Manager
Heilig-Meyers Furniture Company
(804) 784-7500 ext. 2124

<clip> Query the 
file QADBIFLD on your system and you can see every file containing this
field.  <clip>
So what do you think of using the same names?  How about requiring database
field names be 
limited to 7 or 8 characters so the PREFIX keyword is cleaner?
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com

This thread ...

Return to Archive home page | Return to MIDRANGE.COM home page