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Answer Posted / sumit agnihotri
vsam file record are enter in a sorted order but when we
retrieve a records in KSDS so we specify a primary key
(unique) , in ESDS we enter a record in any order but
retrieve a records through the RBA (Relative byte address)
who r auto-generated, and also enter a record in any order
but retrieve records through the RRN (relative record
number)....
so the Answer is that we enter a records in a VSAM file
in a sorted order ....
| Is This Answer Correct ? | 3 Yes | 2 No |
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what is the use of the file status clause in the select statement in vsam?
What is speed parameters in define cluster command?
is it required that primary key values have to be unique? Do alternate key values have to be unique?
Define dynamic processing?
How to get the last record in vsam file in cluster? And how can u get the ksds file records into cobol program?
Why is it required to have a keyed directed retrieval?
Explain what are the optional parameters to the input dataset while loading the empty cluster with the data records?
Yes. Because the alternate key would first locate the primary key, which in turn locates the actual record. Needs twice the number of I/Os.
What is the main function of key-sequenced data set?
Using alternate indexes in batch program?
What are the different commands used in idcams for vsam?
What is a lds (linear data set) and what is it used for?
what do you mean by a upgrade set in vsam?
What are the building blocks used in vsam datasets?
what is the meaning of each of the values in shareopts(2 3)?
