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What is the meaning of data definition name (ddname) and
dataset name (dsname) in the DD statement?
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Answer Posted / sunitha
Data Definition name (ddname) is a eight character name
used to give the name to the DD statement. In COBOL, In
ENVIRONMENT DIVISION , INPUT-OUTPUT SECTION, FILE-CONTROL
paragraph, a SELECT statement defines a file name and
assigns a device name to it where the device name is the
ddname that is coded in the JCL.
Dataset name(dsname) is the operating system(MVS) name for
the file.
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