Defining record lengths for VSAM files
You can define VSAM records to be fixed or variable in
length. COBOL determines the record format from the RECORD clause
and the record descriptions that are associated with the FD entry
for a file.
About this task
Because the concept of blocking
has no meaning for VSAM files, you can omit the BLOCK CONTAINS clause.
The clause is syntax-checked, but it has no effect on how the program
runs.