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What is the use of VSAM files? How to read this ?
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Answer / y@$w@nth
VSAM stands for Virtual Storage Access Method.it organizes
the records in a file in different formats for faster
accessing. various vsam datasets(files) structures are
KSDS(Key Sequential Dataset)
ESDS(Entry Sequenced Dataset)
RRDS(Relative Record Dataset)
we can read the Vsam Files
sequentially,randomly,dynamically(sequential,random) based
on the organization it refers.the following are the access
methods that we can perform on vsam datasets(files)
KSDS(sequential,random,dynamic)
ESDS(sequential,random)
RRDS(sequential,random)
| Is This Answer Correct ? | 13 Yes | 0 No |
Answer / dinesh
VSAM (or) VIRTUAL STORAGE ACCESS METHOD. it is faster access
to data, when comparing other access methods by the way of
Data sets ORGANIZATION. we can able to insert a records in
good way.records are physical removed while we deleting the
records and we can get the free space.
| Is This Answer Correct ? | 13 Yes | 1 No |
Answer / raaj
vsam is an accessing and storing method ,which provides an
efficient way of storng and accessing file data.
| Is This Answer Correct ? | 4 Yes | 1 No |
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?
name the utility program closely associated with vsam?
Using alternate indexes in cics program?
explain the differences between vsam and non-vsam files
What is a lds (linear data set)?
By looking into JCL can we identify the dataset is VSAM (VSAM dataset supposed to be a input dataset).In this scenerio how will we identify the dataset is VSAM ?
5 Answers Cognizant, EDS, Shridhar,
Suppose 3 generations of a GDG exist. How would you reference the 1st generation in the JCL?
What are the types of VSAM datasets?
why do we use vsam file thn seqential files ?
What is a ca split?
Can we copy a sequential file to a VSAM file ? If yes, What will happen of the size of the sequential file is bigger than that of the VSAM file?
What makes vrrds different from vsam?
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