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"Always" is hard to apply.  And, in some cases you may want to use SQL for 
single row fetches.  For example, if I have a bolt on application that is 
supposed to work on both BPCS405CD and BPCS8, don't you think that using a 
CHAIN might be hard on this file layout:

IIM - Item master: BPCS8
Field        Start     End  Attrib  Text 
IID              1       2  A2      Record ID (IM/IZ)
IPROD            3      37  O35     Item Number 
IDESC           38      87  O50     Item Description 
...

IIM - Item master: BPCS405CD
Field        Start     End  Attrib  Text 
IID              1       2  A2      Record ID; IM/IZ
IPROD            3      17  A15     Item Number 
IDESC           18      47  A30     Item Description
...

Not only did they add new fields, etc, but they changed the "key" size, 
etc.

Chain may be faster - but better?

Rob Berendt

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