Topic: Oracle Certified Professional Exams (OCP & OCA) >> Which two statements are true about constraints? (Choose two.)
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| Title: Which two statements are true about constraints? (Choose two.) |
| naidu |
Posted: Dec 26, 2006 07:15:22 AM |
Total Post: 85
Joined: Nov, 2006
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Which two statements are true about constraints? (Choose two.)
A. The UNIQUE constraint does not permit a null value for the column.
B. A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.
C. The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.
D. The NOT NULL constraint ensures that null values are not permitted for the column.
Answer:
Plz help me on this question as soon as possible plz |
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 Jayanta |
| Posted: Dec 26, 2006 01:36:55 PM |  |
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Total Post: 479
Joined: Feb, 2006
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unique+not null=primary key
b and d r the correct options
hope this will help.
with regards
jayanta
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| sathish |
| Posted: Dec 26, 2006 10:05:57 PM | |
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Total Post: 47
Joined: Mar, 2006
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