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Question 19: Which of the following criteria should be taken into account, when choosing index columns?

15. February 2010
By urs in mysql questions

1 Comment

 
(Find all correct answers)
 

a) is the amount of distinct values of the column relatively high?
b) is the column used in where clauses?
c) is the column used in order by clauses?
d) is the column used in joins?

 
[ Tables and Indexes (15%) - Indexes ]
 

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  1. urs — 15. February 2010 @ 17:34:23 —


    Answers:
     
    a b c d
     
    All of the listed criteria can indicate candidates for indexes.
     

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