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 COBOL  |  Question 142 of 159    Print  
What is an index for tables?

  
Total Answers and Comments: 1 Last Update: May 27, 2008     Asked by: sprabodhini 
  
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No best answer available. Please pick the good answer available or submit your answer.
May 27, 2008 01:08:25   #1  
guraddiv Member Since: April 2008   Contribution: 19    

RE: What is an index for tables?
Generally index is created in either primary key or alternate key of a table for faster access of records.
 
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 Related Questions

A subscript is a working storage data definition item, typically a PIC (999) where a value must be moved to the subscript and then incremented or decremented by ADD TO and SUBTRACT FROM statements. An 
Latest Answer : subscript tells the occurance of a table.where as index tells the displacement of the table. subscript is a working storage variale where as index is not a working storage variable. never use both index and subscript combinely ...

Wake up - you haven't been paying attention! It's not possible to pass an index via linkage. The index is not part of the calling programs working storage. Those of us who've made this 
Latest Answer : We can pass subscript by linkage section. index cant. ...

What is the difference between a binary search and a sequential search? What are the pertinent COBOL commands?
In a binary search the table element key values must be in ascending or descending sequence. The table is 'halved' to search for equal to, greater than or less than conditions until the element 

Suppose i have array of 10 elements in it how to access 5 element from the array using sup script and index?
Read Answers (9) | Asked by : raja

Latest Answer : Generally index is created in either primary key or alternate key of a table for faster access of records. ...

Consider the follwing snippet:01 WS-VAR USAGE IS INDEXIs this a valid working storage definition?Justify your answer 
Latest Answer : 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 ...

How COBOL FLAT files(Index,Sequential) are very secure for huge data?If not, How will you migrate with any Database with Frond end COBOL?
View Question | Asked by : gilbat82


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