试题与答案

下述哪一条是由于关系模式设计不当所引起的问题______。A.丢失修改 B.更新异常

题型:单项选择题

题目:

下述哪一条是由于关系模式设计不当所引起的问题______。

A.丢失修改

B.更新异常

C.读脏数据

D.数据被非法读取

答案:

参考答案:B

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题型:阅读理解

阅读理解。

     Look! This is a picture of my family. My mother is a doctor. My father is a teacher. This is my brother. His name is Harry. He's twelve. He's a student. That is my grandmother. Ah, this is me. My name is May. I'm ten. I'm a student. Harry and I are in the same school. 

根据短文内容,判断下列句子正(T)、误(F)。

( )1. This is a picture of my family.

( )2. My mother is a teacher.

( )3. Harry is my brother.

( )4. Harry is twenty.

( )5. Harry and I are in the same school.

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