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. （ ） store core information that is important to the business and , more specifically , to the application , such as order information or customer mailing information. （ ） 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. （请作答此空） is given to those databases which are based on older , sometimes outdated technology that is seldom used to develop new applications . （ ） are collections of records that are related to each other through pointers In relational database , （ ） can be used in ensuring that values linking the tables together through the primary and foreign keys are valid and correctly synchronized.
- A.Legacy database
- B.Backup database
- C.Multidimensional database
- D.Workgroup database
正确答案及解析
正确答案
解析
（ ）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，例如订单信息或客户邮件信息。（ ）包含静态值，例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。（请作答此空）给予那些基于较旧的，有时过时的技术的数据库，这些技术很少用于开发新的应用程序。（ ）是通过指针彼此相关的记录集合在关系数据库中，（ ）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。 A. 旧数据库 B. 备份数据库 C. 多维数据库 D. 工作组数据库
