Agreed. I inherited and replaced a messy set of JCL/sorts/handgrubbing w/a simple pair of cobol programs. The input tx file is update in place. It is loaded by a sort. Each tx has an effective date. Programs run once a day. When date of exec is reached, tx is executed and date of exec is shown in record.
IBM Mainframe Discussion List <IBM-MAIN@BAMA.UA.EDU> wrote on 08/21/2007 10:23:11 AM: > I was amazed to see how many posters effectively said "don't use this > technique"! > > QSAM update-in-place is a very simple, easy-to-use and effective > update technique that has been used in countless applications for > goodness knows how many years. Only the application programer will > be aware when the technique has been used, there's nothing to tell > sysprogs or operators that it's in use and absolutely no need for > them to know. One of it's strengths is the ability to have > concurrent batch updating of a file that is also being used read-only > by other programs, perhaps for online customer queries, the sort of > thing that today you'd be using a fully-blown database for. ----------------------------------------- The information contained in this communication (including any attachments hereto) is confidential and is intended solely for the personal and confidential use of the individual or entity to whom it is addressed. The information may also constitute a legally privileged confidential communication. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this communication in error and that any review, dissemination, copying, or unauthorized use of this information, or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. Thank you ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
