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GeekInterview.com > Interview Questions > Mainframe > COBOL
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Question: Working Storage Definition
Answer: Consider the follwing snippet:
01 WS-VAR USAGE IS INDEX
Is this a valid working storage definition?
Justify your answer |
| May 05, 2008 05:28:41 |
#1 |
| guraddiv |
Mainframe Expert Member Since: April 2008 Total Comments: 19 |
RE: Working Storage Definition
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Hi,
This is not a Valid definition bcz the USAGE IS INDEX clause is used to provide an optimized table subscript. When a table is the target of a SEARCH statement it must have an associated index item.
Any item declared with USAGE IS INDEX can only appear in:
- A SEARCH or SET statement
- A relation condition
- The USING phrase of the PROCEDURE DIVISION
- The USING phrase of the CALL statement |
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