Oracle
1Z0-071 · Question #120
1Z0-071 Question #120: Real Exam Question with Answer & Explanation
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Question
View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index-organized table. Evaluate this SQL statement: ALTER TABLE emp DROP COLUMN first_name; Which two statements are true? (Choose two.)
Exhibit
Options
- AThe FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY
- BThe FIRST_NAME column would be dropped provided at least one column remains in the table.
- CThe FIRST_NAME column would be dropped provided it does not contain any data.
- DThe drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is
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