1z0-071 Exam Dumps | You execute this command: TRUNCATE TABLE dept; Which two are true?

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Question 98/144

You execute this command:
TRUNCATE TABLE dept;
Which two are true?

A. It drops any triggers defined on the table.

B. It retains the indexes defined on the table.

C. It retains the integrity constraints defined on the table.

D. A ROLLBACK statement can be used to retrieve the deleted data.

E. It always retains the space used by the removed rows.

F. A FLASHBACK TABLE statement can be used to retrieve the deleted data.

Correct Answer: B,C

When using the TRUNCATE TABLE command in Oracle, several aspects of the table's structure and associated database objects are impacted. Here's an explanation of each option:
A: Incorrect. TRUNCATE TABLE does not drop triggers associated with the table; they remain defined.
B: Correct. Indexes on the table are retained and not dropped when you truncate a table. However, if the index is a domain index, it may be dropped depending on its type.
C: Correct. Integrity constraints such as primary keys, foreign keys, etc., are retained unless they are on a disabled state where truncation can lead to constraint being dropped.
D: Incorrect. A TRUNCATE TABLE operation cannot be rolled back. It is a DDL (Data Definition Language) operation and commits automatically.
E: Incorrect. The TRUNCATE TABLE operation deallocates the space used by the data unless the REUSE STORAGE clause is specified.
F: Incorrect. TRUNCATE TABLE operation removes all the rows in a table and does not log individual row deletions, thus FLASHBACK TABLE cannot be used to retrieve the data.

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