Re: Another V5R1 query... Qualified DSs

>Date: Wed, 9 May 2001 13:35:46 -0500
>From: "Stone, Brad V (TC)" <bvstone@taylorcorp.com>
>
>What's the difference between:
>
>1.  using the QUALIFED keyword on a DS
>2.  specifying PREFIX('dsname.')?
>
>Wouldn't they do exactly the same thing?

Brad, PREFIX('DSNAME.') is only allowed on F specs.  (You
can use a character literal with D spec PREFIX now, but it
can't end with a dot.)  Also, you can specify QUALIFIED on
a program-described data structure, but you can't specify
PREFIX.

But assuming that qualification _could_ be specified through
PREFIX, you might get strange coding like this:

D someDS         DS        PREFIX('DS2.')
D   sub1               1a

With true qualification, the subfield should be someDS.sub1,
but with the prefix kludge, the subfield would be DS2.sub1.
Sure, the compiler could give an error if they didn't match,
but ... ewwwww.

Barbara Morris


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