This data set comparison is performed at the logical record level.
2.
For textual data a line of text corresponds to a logical record.
3.
Data on CMS is structured in logical records rather than a stream of bytes.
4.
In " CMS Pipelines " the data is passed between the stages as logical records.
5.
The amount of logical records that can be stored in the PAT is determined by its page size.
6.
One block might contain several logical ( or user ) records or, in some schemes, partial logical records.
7.
These included Automatic System Facility ( ASF ), which made use of a pre-existing IDMS feature called LRF ( Logical Record Facility ).
8.
IBM refers to the data records programmers work with as " logical records ", and the format on disc as blocks or " physical records ".
9.
IOCS was intended to allow Assembler language programmers to read and write records without having to worry about the details of the various devices or the blocking of logical records into physical records.
10.
Data sets are not unstructured streams of bytes, but rather are organized in various logical record and block structures determined by the DSORG ( data set organization ), RECFM ( record format ), and other parameters.
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