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Q:what is the difference between the variable length and
fixed lenght.how it varies in the cobol.
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Answer Posted / subash
A file where all the records are of the same length is said to have fixed length records.
Advantage : Access is fast because the computer knows where each record starts.
Disadvantage : Using Fixed length records, the records are usually larger and therefore need more storage space and are slower to transfer (load or save).
One or more of the fields can be of differing lengths in each record, called variable length records
Advantages:
the records will be smaller and will need less storage space
the records will load faster
Disadvantages:
The computer will be unable to determine where each record starts so processing the records will be slower.
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