You have created an index with this statement: create index ename_i on employees(last_name,first_name); How can you adjust the index to include the employees' birthdays, which is a date type column…

The correct answer is C. You must drop the index and re-create it. Exam Questions, Study Guides, Practice Tests. Lead the way to help you pass any IT Certification exams, 100% Pass Guaranteed or Full Refund. Especially Cisco, Microsoft, CompTIA, Citrix, EMC, HP, Oracle, VMware, Juniper, Check Point, LPI, Nortel, EXIN and so on. Our Slogan…

Creating Other Schema Objects

Question

You have created an index with this statement:

create index ename_i on employees(last_name,first_name); How can you adjust the index to include the employees' birthdays, which is a date type column called DOB? (Choose the best answer.)

Options

AUse ALTER INDEX ENAME_I ADD COLUMN DOB;.
BYou can't do this because of the data type mismatch.
CYou must drop the index and re-create it.
DThis can only be done if the column DOB is NULL in all existing rows.

How the community answered

(19 responses)

A
11% (2)
C
84% (16)
D
5% (1)

Explanation

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Topics

#composite index#ALTER INDEX#DROP INDEX#index modification

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