To what utility do those control statement refer ???
Not certainly to IDCAMS
When giving suggestions make sure You understand the environment
of the O/P, and try to imagine ( when a question is badly posed )
what the O/P reallly means...
in this case ( MVS environment ) the O/P almost certainly refers to an
ALTERNATE INDEX hierarchy for VSAM CLUSTERS...
The overall structure in such case is :
- the original dataset
- an index built on the base cluster, there can be as many as needed
Note: an alternate index is just a cluster itself, and can be processed
on it' s own without accessing the base cluster,
the data read might, and usually does, not have any meaning
- the entity that relates the alternate index and the base cluster
( the PATH_NAME can be the dsname of a DD statement )
Given a reasonably written program the same can read sequentially
both a bsase cluster and a path by simply changing
the dsname on the dd statement,
and the output will be ordered according to the primary or the