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What is the difference between a PDS member and a GDG
Generation ? Is it only this, that with a generation we can
use +1, 0, -1 etc while with PDS member we can not ?
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Answer Posted / zos13
To understand the difference between PDS and GDG, you need to know the difference between PDS and PS.
PDS is like a folder of Windows with limitation it can not contain another folder(S), but Windows can do.
PDS may contain Programs, JCL's, Files(input/output) etc and they are called members.
If you wan to access a particular member, you need to give complete path like userid.xxxx.xxxx(memname).
PS is a single, independent file created by option 3.2 using Directory =0 or, PS or through JCL with DCB, SPACE, UNIT parameters etc.
Now coming to GDG's, they are similiar to PS with only difference if limit is 5 then there will be a kind of relation between all GDG's or their versions.
You can use (0), (-1), (-2), (+1) etc. based on creation or version or by giving the complete path(GDG name with GnnnnVnn).
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