【单选题】【消耗次数：1】
在数据库设计中，进行用户子模式设计是下述哪个阶段要完成的工作（ ）。
①
需求分析阶段
②
概念结构设计阶段
③
逻辑结构设计阶段
④
物理结构设计阶段
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【简答题】
数据库设计的步骤主要有需求分析、概念结构设计、[填空1]、物理结构设计 、数据库实施、数据库运行与维护6大步骤。
【单选题】
软件总体设计是指软件总体结构设计和数据设计,该阶段的主要任务不包括( )。
①
设计软件的模块结构
②
定义接口并建立数据结构
③
生成概要设计规格说明和组装测试计划
④
模块设计
【多选题】
以下关于逻辑结构设计表述正确的是________
①
逻辑结构设计的目标是把概念模型转化为逻辑模型
②
逻辑结构设计的目标是把逻辑模型转化为概念模型
③
逻辑结构设计可以由DBMS自动完成
④
逻辑结构设计必须有数据库设计人员参与完成
随机题目
【单选题】
The elbows on your coat have worn thin, so I must _____them.
①
mend
②
patch
③
repair
④
pitch
【单选题】
Mac’s close _____to his brother made people mistake them for one another.
①
resemblance
②
identity
③
appearance
④
relationship
【单选题】
The thieves _____the waste paper all over the room while they were searching for the diamond ring.
①
spread
②
scratched
③
scattered
④
burned
【单选题】
George was introduced to _____activities at a young age, when she was hired to act as a lookout for drug-dealers.
①
illegal
②
lawful
③
faithful
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peaceful
【单选题】
When he studied at college, Jack was supported by a _____ .
①
treatment
②
assistance
③
scholarship
④
protein
【单选题】
When I read the newspaper, I always read the _____ first.
①
headlines
②
headquarters
③
heaven
④
horizon
【单选题】
The millions of circulations involved, _____ by hand, would have lost all practical value by the time they were finished.
①
had they been done
②
they had been done
③
having been done
④
they were done
【单选题】
Betty advised me to label our luggage carefully in case it gets _____ in transit.
①
misused
②
mishandled
③
mistaken
④
mislaid