【OCP-12c】2019年CUUG OCP 071考試題庫（75題）

阿新 • • 發佈：2019-03-11

all 12c choose reg enc int when exe for each

75、Which statements are correct regarding indexes? (Choose all that apply.)

A. A non-deferrable PRIMARY KEYor UNIQUE KEYconstraint in a table automatically attempts to creates a unique index.

B. Indexes should be created on columns that are frequently referenced as part of any expression.

C. When a table is dropped, the corresponding indexes are automatically dropped.

D. For each DML operation performed, the corresponding indexes are automatically updated.

Correct Answer: ACD

Section: (none)

Explanation：解析，有點數據庫管理的意思

【OCP-12c】2019年CUUG OCP 071考試題庫（75題）

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【OCP-12c】2019年CUUG OCP 071考試題庫（75題）

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【OCP-12c】2019年CUUG OCP 071考試題庫（75題）

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