Answer Posted / codebulls

At times a vendor might offer a file to be consumed by a mainframe application. Rather than the primary key, the file would contain another field in the VSAM which is unique but not the primary key of VSAM. If such fields are made to be Alternate Index, unnecessary reads and performance overhead can be avoided.

what do you mean by gdg in vsam?

1196

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name a few common vsam status codes?

1065

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if you wish to use the rewrite command how must the vsam file be opened?

1157

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what is meant by s0c-07 system abend codes?

1087

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

1111

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Define base cluster?

1015

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State the differences between vsam and non-vsam files?

1058

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Explain what are the optional parameters to the input dataset while loading the empty cluster with the data records?

1161

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explain how many ways you can load data in a vsam cluster?

1047

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What is a ci split? What is a ca split?

1221

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what do you mean by define model parameter?

1162

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Is it slower if you access a record through alt index as compared to primary index?

1024

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Explain the index set?

1099

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Tell me how many alternate indexes you can have on a dataset?

1102

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What is the device independent method to indicate where a record is stored?

1050

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