Associations help more with the query side of things. They don't by themselves do much on the basic coding side. It won't affect what a "writev" command does.
Among the benefits: 1. Helps the BY.EXP parameter in query statements to show the corresponding values from related fields. A BY-EXP used in a list statement where the associations are specified will produce different results than one where they aren't specified. 2. Useful when generating a schema through VSG. 3. Provides useful information about the file when doing a LISTDICT. In unidata you should also specify whether the field is multi-valued or multi-subvalued. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brutzman, Bill Sent: Thursday, August 02, 2007 12:23 PM To: '[email protected]' Subject: [U2] Why MultiValue Associations ? What are the advantages of defining in the data dictionary mv associations? Does it mean that if I change or insert via a UniBasic writev command, that all of the associated fields get a null character if the program does not explictly specify a change? Are there any downsides to just defining a vanilla "M" field that is used with other associated M fields. Comments would be appreciated. --Bill ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/ ------- u2-users mailing list [email protected] To unsubscribe please visit http://listserver.u2ug.org/
