What is the use of VSAM files? How to read this ?
- 3 Answers
- 8237 Views
- CTS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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 |
what is the meaning of each of the values in shareopts(2 3)?
How to get the last record in vsam file in cluster?
Can AMS commands be run from the TSO prompt ?
Is it slower if you access a record through alt index as compared to primary index?
In vsam at the cluster creation for KSDS FREESPACE parameter is required but for ESDS FREESPACE parameter is not required ?
what's the biggest disadvantage of using a VSAM dataset?
8 Answers Anjana, CTS, DSRC, IBM,
In a KSDS file, key is missing for one record. How to insert the key for that particular record from back up file. Is there any sorting needed for the back up file before the key insertion?
What are the information stored in ci?
FREESPACE can be specified for which type of cluster? a.LDS b.RRDS c.ESDS d.KSDS
in a cobol select statement for a ksds can you tell me what are the 3 possibilities for access?
What is the purpose of relative record data set used in vsam?
can you specify some the distinctive features of a ksds, key sequenced dataset?
COBOL 
