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What is PDS and PS

 
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Novice

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Joined: 27 Oct 2004
Posts: 8
Location: Bangalore,INDIA

PostPosted: Wed Nov 03, 2004 8:56 am    Post subject: What is PDS and PS
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I am new to mainframes.
So can any one plz describe me what are these data sets (PDS etc) mean?
Is there any anlogy between the directory structure of other OSs and this
system.
I suppose these are file systems of MVS.
Plz clarify.

Rgds.
Novice.
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mfsuresh

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Joined: 03 Nov 2004
Posts: 5

PostPosted: Wed Nov 03, 2004 11:51 am    Post subject:
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hi
i think u know what is file. a PDS means partitioned data set. means u can create members. where as PS is physical sequential file where u cant create member. PS is a single file.
PDS is like a directory where u can store related infomation.
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lramani

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Joined: 03 Nov 2004
Posts: 21
Location: NOIDA, India

PostPosted: Wed Nov 03, 2004 3:23 pm    Post subject:
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Hi,
To add on to what Suresh has put in...

PDS is like ur folder where in u put in members.
The only difference may be that u cannot have a PDS
within a PDS (like folder within a folder).

The directory blocks that u put in while allocation
tells u whether its a PDS or a PS.
For a PDS u would specify a non zero number in directory block
where as for a PS its zero.

The directory blocks decide the number of members
that a PDS can have.

I hope that was enough info about PDS and PS.
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