Discussion :: Database System 2 - CS
- A rule of thumb for choosing indexes for a relational database includes which of the following?
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A.
Indexes are more useful on smaller tables. |
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B.
Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. |
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C.
Do not specify a unique index for the primary key of each table. |
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D.
Be careful indexing attributes that have null values. |
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Answer : Option D
Explanation :
Explanation Not Provided
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