ocp 11g試題解析:1Z0-051-048題
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48. Which two statements are true regarding indexes? (Choose two.)
A. They can be created on tables and clusters.
B. They can be created on tables and simple views.
C. You can create only one index by using the same columns.
D. You can create more than one index by using the same columns if you specify distinctly different
combinations of the columns.
Answer: AD
試題解析:
A正確,可以在表和簇上面創建索引。
B錯誤,不能再簡單視圖上創建索引
C錯誤,可以和別的列組合來創建別的索引。
D正確,通過指定不同列的組合來在同一列創建一個或多個索引,這是是正確的。