What is basic difference between "DIRECTORY" and "PDS" in
IBM MAINFRAME.How to define a DIRECTORY and what is the
structure and defination for the same?




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What is basic difference between "DIRECTORY" and "PDS" in IBM MAINFRAME.How to..

Answer / sumesh

A PDS or Partitioned Data Set is a dataset containing
multiple members, each of which holds a separate sub-data
set, similar to a directory in other types of file systems.
This type of dataset is often used to hold executable
programs (load modules), source program libraries
(especially Assembler macro definitions). A PDS is most
somewhat analogous to a Zip file on microcomputers, except
the files stored in a PDS are not compressed.

The Partitioned Data Set can only allocate on a single
volume with the maximum size of 65536 tracks.

Besides members, a PDS consists also of their directory.
Each member can be accessed directly using the directory
structure. Once a member is located, the data stored in
that member is handled in the same manner as a PS
(sequential) data set.

Sumesh. R

Is This Answer Correct ?    14 Yes 1 No

What is basic difference between "DIRECTORY" and "PDS" in IBM MAINFRAME.How to..

Answer / ajay ingle

As in DIRECTORY we can store files as well as another
DIRECTORY which includes other files but PDS includes only
mebers not another PDS inside it.

Is This Answer Correct ?    8 Yes 1 No

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