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explain in brief why do vsam take more disk space than other utilities?
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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
On which datasets You can have ALT INDEX?
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.
what is difference between repro and export? if any one know this plz tell me
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COBOL 
