2. 计算机
  3. Designing the data storage architecture is an important activity in system design．There are two main types of data storage form

Designing the data storage architecture is an important activity in system design．There are two main types of data storage form

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问题 Designing the data storage architecture is an important activity in system design．There are  two main types of data storage formats：  files and databases．Files are electronic of data that have  been optimized to perform a particular transaction．There are several types of files that differ in the way they are used to support an application．___(1)____store core information that is important to the business and，more specifically，to the application，such as order information or customer mailing information．__(2)____ contain static values，such as a list of valid codes or the names of cities．Typically,the list is used for validation．A database is a collection of groupings of information that are related to each other in some way．There are many different types of databases that exist on the  market today．__(3)____  is given to those databases which are based on older，sometimes  outdated  technology that is seldom used to develop new applications．__(4)_____are collections of records that  are related to each other through pointers In relational database，__(5)____can be used in ensuring that  values linking the tables together through the primary and foreign keys are valid and correctly  synchronized.
(5)
选项 A、identifying relationships
B、normalization
C、referential integrity
D、store procedure
答案C
解析 参考译文：在系统设计中，数据存储架构设计是非常重要的一项工作。有两种主要类型的数据存储格式，即文件和数据库，文件是经过优化以执行特定事务的电子数据。____1____存储的核心信息对业务很重要，更具体地说，对应用程序而言，如订单信息或客户邮件信息。____2____包含静态值，如有效代码列表或城市名称，通常该列表用于验证。数据库是以某种方式彼此相关的信息分组的集合，目前市场上存在许多不同类型的数据库。___3_____给予那些基于较旧且过时技术的数据库，这些技术很少用于开发新的应用程序。___4____是通过指针彼此相关的记录集合在关系数据库中，___5____可用于确保通过主键和外键将表链接在一起的值是有效且正确同步的。
1 A、主文件      B、查找文件       C、交易文件        D、历史档案
2 A、主文件      B、查找文件       C、审核文件        D、历史档案
3 A、旧数据库    B、备份数据库     C、多维数据库      D、工作组数据库
4 A、分层数据库  B、工作组数据库   C、链接表数据库    D、网络数据库
5 A、识别关系    B、正常化         C、参照完整性      D、商店程序
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