Answer / guest

Duplicate alternate key . Happens on both input and output
operation

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,

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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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OPEN INPUT StudentFile READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ PERFORM UNTIL EndOfStudentFile DISPLAY StudentId SPACE StudentName SPACE CourseCode SPACE YOBirth READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ END-PERFORM CLOSE StudentFile STOP RUN what will be output

0 Answers  

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what will happen if there is no secondary allocation made for datasets?

0 Answers   IBM,

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Alt key is used for what type of vsam file

3 Answers  

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is delete operation supported in an esds? Is rewrite operation possible in esds?

0 Answers   IBM,

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What's a LDS (Linear Data Set) and what's it used for?

1 Answers   Cap Gemini, Steria,

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How is record management performed in vsam?

0 Answers  

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Is CA(Control Area) is part of CI(Control Interval)

3 Answers  

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What is an alternate index and path ?

2 Answers   Infosys, TCS,

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what is the difference b/w sequential and ESDS

6 Answers   EDS, IBM, Maples,

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how many buffers are allocated to vsam ksds and esds?

0 Answers   IBM,

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