Is a delete operation possible in an ESDS?B. Is rewrite operation possible in ESDS ?

3 Answers  

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During processing of a VSAM file, some system error occurs and it is subsequently unusable . What do you do ?

1 Answers  

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What are the advantages of vsam over isam?

0 Answers  

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Why is master catalog used in vsam?

0 Answers  

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What is the use of VSAM files? How to read this ?

3 Answers   CTS,

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can we access sequential files online

4 Answers   Cap Gemini, GS,

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What is Control Interval, Control Area?

1 Answers  

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I have three fields in a Variable VSAM file X(2) Y(10) occurs X times Z(02) Say for the first record X=2 then the length of the file is 2+(10*3)+2=34 second record, x=4 then 4+(10*4)+2=46 If any time if the field x is updated then the total length changes. Is it feasible? Is it

2 Answers  

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On which datasets You can have ALT INDEX?

2 Answers  

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what do you mean by the cobol record key clause in vsam?

0 Answers   IBM,

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Assuming that the DEFINE JCL is not available, how do you get info about a VSAM file's organisation?

1 Answers   IBM,

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What more info you should give in the DD statement while defining the next generation of a GDG?

1 Answers   IBM,

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