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  1. In a single table (with 10 columns) join query the number of values needed to examine per column is __________.

    1. 10
    2. 1
    3. 2
    4. 0
    5. None of these
Correct Option: A

For indexing in the context of performing joins, in a single table query, the number of values that are needed to be examined per column is the number of rows in the table.


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