DBMS主要由( )两大部分组成。A．文件管理器和查询处理器 B．_爱下问搜题

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问题单项选择题

DBMS主要由( )两大部分组成。

A．文件管理器和查询处理器

B．事务处理器和存储管理器

C．文件管理器和数据库语言编译器

D．存储管理器和查询处理器

答案

参考答案：D

解析：数据库管理系统(DBMS)是一种系统软件，负责数据库中的数据组织、数据操纵、数据维护、控制及保护和数据服务等。数据库管理系统是数据库系统的核心，数据库系统中所有与数据库打交道的操作，包括建库、查询、更新及数据控制，都是通过数据库管理系统(DBMS)进行的，这些操作可以分为存储和查询两大部分。

完形填空

Once upon a time there were two brothers who lived near each other. One day, they had a 16 because of some small things. And neither was willing to 17 each other.
One morning, there was a knock at door of the elder brother. He 18 it and found a man standing beside the door. “I’m a carpenter(木匠). I’m 19 a few days’ work. Perhaps you would have a few small jobs I could help with.”
“Yes,” said the elder brother. “I do have a job for you. 20 at that farm across the small river. It is my younger brother’s. We had a quarrel, so I won’t like to see his 21 any more. I want you to build me a 8-foot 22. ”
The man said, “I think I understand the situation. Don’t worry. I’ll be able to do a job that makes you 23” So the elder brother was very glad and left for the town nearby.
In the evening, the carpenter had just 24 his job when the elder brother returned. But he was 25 to find, instead of a fence, before him, stood a 2 6, which went from one side of the river 27 the other! On the other 28 of bridge, was his younger brother.
“Do you know the name of the bridge?” The carpenter asked.
“No,” the elder brother was 29
“OK, I can tell you. Its name is understanding and 30,” the carpenter smiled.
Suddenly they began to understand 31. Surely, between two brothers there should be a bridge rather than a 32. Standing on the bridge, they 33each other’s hands with 34 in their eyes.
“Could you stay another few days? I’ve a lot of other work for you,” said the elder brother. “I’d love to 35 on,” the carpenter said. “But I have many more bridges to build.”

A．looking for	B．looking at
C．looking on	D．looking up

A．disappointed

填空题

津菜的重要特点是以（）为主料。