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What is the difference between sequential files and ESDS files?
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Answer / guest
Sequential (QSAM) files can be created on tape while ESDS
files cannot. Also, you can have ALTINDEX for an ESDS while
no such facility exists for QSAM files.
| Is This Answer Correct ? | 4 Yes | 4 No |
why do we use vsam file thn seqential files ?
what is the difference between vsam and dataset how do u create vsam dataset which file you r used?
if you wish to use the rewrite command how must the vsam file be opened?
what how do you initialize a vsam file before any operation? A vsam with alternate index?
how many buffers are allocated to vsam ksds and esds?
1. delete is not possible in esds. why? 2. i have 10 records in a esds file and i want to delete only 1st record ..then what i have to do?.. it will not affect any sequence of the RBA. 3. why open extend is not possible in rrds vsam file?
What is the COBOL RECORD KEY clause?
What do you mean by RDW in VSAM?
What is the main purpose of having user catalog in vsam?
is it slower if you access a record through alternative index as compared to primary index?
What are the common vsam error conditions and codes?
is delete operation supported in an esds? Is rewrite operation possible in esds?
COBOL 
