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What is the Difference between LDS & ESDS ?
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Answer / rackshit sharma (+91-991107896
LDS(LINEAR DATASET)
1.No CI(control interval) is there in Lds thus there is no
RDF's & CIDF.
2.Data is stored as data bytes, only data component exists.
3.Data accessed as byte addressable string.
4.Has a CISZ of (4096)bytes.
5.Mainly used where fast & random access is required to
data having no hierarchical restrictions like table/array
ESDS(Entry sequenced dataset).
1.CI is there withone or more RDF's per logical record & 1
CIDF per CI.
2.Records are sequenced on the basis of their entry, more
like in FIFO manner.Records are inserted from the bottom
of the last record in dataset.
3.No freespace as it is unused space because records cant
deleted in esds only made inactive so we cannot use dat
space again,only rewtite is possible.
4.Each record has its unique RBA(relative byte address),
useful while processind ESDS.
5.Can be used in system where sequence has to be maintain
like,Online Examination,Railway reservation sysytems.
| Is This Answer Correct ? | 14 Yes | 2 No |
Answer / naveen e s
ESDS IS USED FOR PROCESSING RECORDS SEQUENTIALLY
LDS IS USED IN DB2 MAINLY, FOR CREATION OF TABLESPACES.
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / guest
These two datasets are VSAM datasets. ESDS maintains control
information. But LDS does not maintains the control information.
| Is This Answer Correct ? | 3 Yes | 5 No |
Explain the function of the relative record data set?
What is the purpose of relative record data set used in vsam?
What is Control Interval, Control Area ?
What is FREESPACE ?
explain the differences between vsam and non-vsam files
What is an RBA in rrds? What does it do? What is it used for?
what is reuse parameter ?
what will happen if there is no secondary allocation made for datasets?
should a AIX should be a unique value?
Differentiate between ci split and ca split?
What is control area?
How do you calculate record size of an alternate cluster? Give your values for both unique and nonunique.
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