问题
单项选择题
当表的重复行数据很多时，应该创建的索引类型为（）。
A.B树
B.反转
C.位图
D.函数索引
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
当表的重复行数据很多时，应该创建的索引类型为（）。
A.B树
B.反转
C.位图
D.函数索引
参考答案：C
| 根据对话情景选择恰当的选项，其中有两项是多余的。 | |
B: 1. A: Where is Hangzhou? B: It's in Zhejiang, the south of China. A: 2. B: It's famous for Leifeng Pagoda, Bainiangzi, Linyin Temple and especially West Lake. A: Do many people go there to enjoy their holidays every year? B: 3. A: How long did you stay there? B: 4. A: Did you take a lot of photos? B: Certainly. We also had some delicious food. 5. A: What an exciting trip! I'll go there one day. |
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