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partitioned data set

   Also found in: Acronyms 0.02 sec.
partitioned data set [pär′tish·ənd ′dad·ə ‚set]
(computer science)
A single data set, divided internally into a directory and one or more sequentially organized subsections called members, residing on a direct access for each device, and commonly used for storage or program libraries.
(file format)partitioned data set - (PDS) A data set on an IBM mainframe that contains members, each of which acts like a separate data set. Partitioned data sets are more space-efficient than individual data sets, because they can put more than one data set on a track. They are also used to hold libraries, with one function per member. The syntax for a member is NAME.OF.PDS(MEMBER) although some systems (such as Phoenix) could use NAME.OF.PDS:MEMBER

Original PDSes were of fixed size, and needed frequent compression to recover space after deleting or changing members. Newer PDS/E Extended PDSes do not have this problem.


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Using the member level security feature, DRM will block changes from being applied to members of a partitioned data set, unless specific authority has been granted.
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