Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

Files

FILE attribute
RECORD and STREAM attributes
INPUT, OUTPUT, and UPDATE attributes
SEQUENTIAL and DIRECT attributes
BUFFERED and UNBUFFERED attributes
ENVIRONMENT attribute
KEYED attribute
PRINT attribute

To allow a source program to deal primarily with the logical aspects of data rather than with its physical organization in a data set, PL/I employs models of data sets, called files. These models determine how input and output statements access and process the associated data set. Unlike a data set, a file data item has significance only within the source program and does not exist as a physical entity external to the program.

A name that represents a file has the FILE attribute.


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