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You are in the final stages of designing a database. You notice that in your requirements...

You are in the final stages of designing a database. You notice that in your requirements gathering documentation, when customers call on the phone to ask a question, the customer service representation asks for their phone number first as opposed to their last name. In order to speed this retrieval up, which type of index would you place on the phone number field?

a. Sequential
b. Unique
c. Non-Clustered
d. Clustered
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Answer #1

Answer: c. Non-Clustered

Since phone numbers for the customer are not in sorted order so it should place Non-Clustered index on on the phone number field.

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