Oracle
1Z0-007 · Question #45
1Z0-007 Question #45: Real Exam Question with Answer & Explanation
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Question
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?
Options
- AColumn definitions cannot be altered to add DEFAULT values.
- BA change to the DEFAULT value affects only subsequent insertions to the table.
- CColumn definitions cannot be altered at add DEFAULT values for columns with a NUMBER data type.
- DAll the rows that have a NULL value for the SALARY column will be updated with the value 5000.
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