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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