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What is the difference between PS file and VSAM file?
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Answer Posted / manjula
PS files can be created on tapes while the VSAM files
cannot. Also, VSAM files can have ALTINDX(alternate index)
while no such facility exists for PS files.
| Is This Answer Correct ? | 23 Yes | 3 No |
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Yes. Because the alternate key would first locate the primary key, which in turn locates the actual record. Needs twice the number of I/Os.
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Define a path?
What is the place for VSAM KSDS?
if you wish to use the rewrite command how must the vsam file be opened?
Differentiate between control interval (ci) and control area (ca)?
Explain the catalog?
to use the rewrite command, how should the vsam file be opened?
What is a lds (linear data set)?
Is it slower if you access a record through alt index as compared to primary index?
Explain the biggest disadvantage of using a vsam dataset?
what is the meaning of each of the values in shareopts(2 3)?
what are s0c1, s0c4, s0c5, s0c7 abends?
What is the device independent method to indicate where a record is stored?
What is the main function of key-sequenced data set?
