【OCP-12c】2019年CUUG OCP 071考試題庫（79題）

79、Which statement is true about transactions?

A. A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT forms a single transaction.

B. Each Data Definition Language(DDL) statement executed forms a single transaction.

C. A set of DDL statements executed in a sequence ending with a COMMIT forms a single transaction.

D. A combination of DDL and DML statements executed in a sequence ending with a COMMIT forms a single transaction.

Correct Answer: B

Section: (none) Explanation：每個DDL語句都是一個事務，因爲DDL語句執行後自動提交。如果A答案SAVEPOINT改爲COMMIT或者ROLLBACK那麼就是正確的。