In the old days, "efficiency" was considered paramount. There was a lot of "roll your own": BDAM, EXCP, that sort of thing.
More recently, functionality and maintainability have become more important to many, and so VSAM and even DB2 are more preferred solutions to the problems that used to be solved with BDAM. Charles -----Original Message----- From: IBM Mainframe Assembler List [mailto:[email protected]] On Behalf Of Ed Jaffe Sent: Monday, November 27, 2017 11:05 AM To: [email protected] Subject: Re: BDAM files On 11/27/2017 10:48 AM, Sudershan Ravi wrote: > Why BDAM files are infrequently used? what are the complexities we face when > we do Direct Access of a file. Before 3390s, disk geometry used to change every few years. That caused a lot of folks to switch to VSAM. -- Phoenix Software International Edward E. Jaffe 831 Parkview Drive North El Segundo, CA 90245 http://www.phoenixsoftware.com/
