问题 问答题

某学校的学籍管理系统实现了对学生学籍信息的管理,其中学生表结构为:学生表(学号, 姓名, 性别, 系号, 是否有学籍),此表中除学号列有唯一索引外,其它列均无索引。

设学生表中有下列数据:

 

并且已经在学生表的姓名列上建立了一个非聚集索引(按姓名拼音升序排序)。请给出查找码“姓名”对应的稠密索引示意图。

答案

参考答案:

阅读理解

阅读理解

       Linda and Betty were both twenty years old. They studied in a medical college. In  June, after a

school year was over they decided to take a vacation in the country. They went to several towns and

villages, and visited some places of interest, saw and heard a lot of interesting things. They enjoyed

themselves very much.

       One afternoon, they were going to stay overnight in a small town. It was too hot to go further and

they wished they could find a river and swim in the cool water. They were driving the car slowly while

they were looking around. Suddenly Linda saw a lake not far away. They drove there fast and stopped

the car by the lake. They looked around and found a man was sitting on a stone and fishing there. When

they took off their clothes and were going to jump into the water. the man came up to them and shouted, "Sorry, Madams' swimming is not allowed in the lake ! "

       "Why didn't you tell us about it before we took off our clothes?" Betty said angrily.

       "But it isn't forbidden to take off clothes by the lake, " said the man.

1. Linda and Betty were         

A. the same age  

B. sisters  

C. doctors      

D. old

2. After a school year was over in June, they        in the country.

A. had a good time

B. had a picnic

C. had a party

D. went to the cinema

3. _     , so they wanted to go for a swim in the cool water.

A. They were good at swimming

B. It was very hot

C. The rivers were beautiful

D. They were very tired

4. The man didn't want them "_     " in Chinese.

A. to fish in the lake

B. to take off their clothes

C. to swim in the lake

D. to get angry

5. The word "forbidden" means "         " in Chinese.

A. 允许  

B. 禁止  

C. 同意    

D. 干扰

问答题 简答题