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How Vsam was evolved? What was the equivalent file for
ESDS,KSDS and RRDS prior to evolution? What were their
disadvantages of those file which leads to evolution of
ESDS,KSDS and RRDS files ?
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Answer Posted / anand r
ESDS
in batch it acts like a flat file
organizanition-sequential
Accessmode is sequential
in online we can read and write the records random manner
by using the key field
KSDS
Access mode: sequential,random and dynamic is possible
like indexed file
RRDS:
like KSDS we can use all the access modes and records are
accessed using RID (record identification No) thats
relative key
| Is This Answer Correct ? | 2 Yes | 3 No |
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write a program to read from a VSAM file , there will be a 5 records to create name. empno. resignation and address to update in a db2 table and call another program using dynamic call to find the matching fields in program 1 to update in db2 table. anybody pls send de program for dis ? thanks in advance...
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