问题 单项选择题

联机事务处理(OLTP)和联机分析处理(OLAP)所需的数据是有区别的,下列描述错误的是( )。

A.分析型数据是经常更新的

B.分析型数据支持管理需求

C.操作型数据面向应用

D.操作型数据支持日常操作

答案

参考答案:A

解析:[分析] 联机事务处理和联机分析处理对数据的要求不一样在于事务处理要面对不停变化的数据进行处理,而联机分析处理是采集稳定的数据进行分析,得出一定的结论。所以本题的分析型数据是经常更换的是错误的。

阅读理解

Mr Brown was going away for a week. Before he left, he said to his son, "If anyone asks for me, you can tell him that your father has been out for doing something, and will be back in a week, then be sure to ask him to sit down for a cup of tea."

"OK, Dad," said his son. But he was afraid his son couldn’t remember this, he wrote these words down on a piece of paper and gave it to him. His son put it into his small pocket, took it out and looked at it every now and then.

Four days passed, but no one came to see his father. The boy thought that there was no man to come and that the piece of paper was of no more use for him, so he burnt(烧) it that evening.

The next afternoon, someone knocked at the door. The boy opened it. A man was standing at the door and said, "Where is your father?" The boy put his hand into his pocket at once and looked for the piece of paper. He could not find it. He suddenly remembered he had burnt it, so he shouted, "No more."

The man was very surprised. He asked, "No more? I met your father last week. When did it happen?"

"Burnt yesterday evening."

小题1:Mr Brown told his son that _____.    

A.he would be away from home for four days

B.he would be back in seven days

C.he would be back in a month

D.he would be back in a week小题2:Mr Brown wrote the words down on ______.

A.the wall

B.the door

C.a piece of paper

D.the picture小题3:A man came to visit the boy’s father on ________.

A.the fifth day

B.the third day

C.the fourth day

D.the second day小题4:The man was very surprised because _____.   

A.he thought the child’s father was dead

B.the child didn’t ask him to sit down

C.the child gave him a cup of tea

D.the child gave him a cup of coffee小题5:What was burnt? ________.     

A.The piece of paper

B.Mr. Smith

C.The visitor

D.the son

单项选择题