Topic: Oracle Certified Professional Exams (OCP & OCA) >> What is true about your ALTER statement?
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| Title: What is true about your ALTER statement? |
| naidu |
Posted: Dec 27, 2006 09:21:40 AM |
Total Post: 85
Joined: Nov, 2006
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The EMPLOYEES table has these columns:
LAST NAME VARCHAR2 (35)
SALARY NUMBER (8, 2)
HIRE_DATE DATE
Management wants to add a default value to the SALARY column. You plan to alter the table by using this SQL statement:
ALTER TABLE EMPLOYEES
MODIFY (SALARY DEFAULT 5000);
What is true about your ALTER statement?
A. Column definitions cannot be altered to add DEFAULT values.
B. A change to the DEFAULT value affects only subsequent insertions to the table.
C. Column definitions cannot be altered at add DEFAULT values for columns with a NUMBER data type.
D. All the rows that have a NULL value for the SALARY column will be updated with the value 5000.
Answer:
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 sathish |
| Posted: Dec 27, 2006 11:03:24 PM |  |
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Total Post: 47
Joined: Mar, 2006
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