Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

Fixed-length data sets

PL/I also allows you to treat a file as a set of fixed-length records. Your PL/I programs can create fixed-length data sets, or access existing files as fixed-length data sets. The data access does not treat Carriage Return(CR) or Line Feed (LF) as characters with special meaning. In particular, the CR - LF sequence does not delimit records, although these characters can be contained in the data set. It is the length you specify that determines what PL/I considers to be a record within the data set. This type of data set has the restriction that the total number of characters in the data set must be evenly divisible by the length you specify.

Fixed-length data sets can be accessed only in a sequential manner.


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