9. 下拉式菜单 drop-down (或pull-down) menu 10. 滚动条 scroll bar Unit Five/Section C
I. Fill in the blanks with the information given in the text: 1. problem 2. consequences 3. design
4. specific; general
II. Translate the following terms or phrases from English into Chinese and vice versa: 1. procedural language 过程语言
2. common design structure 通用设计结构 3. class and object interaction 类与对象交互 4. design constraint 设计约束 5. 设计模式 design pattern
6. 可复用软件 reusable software
7. 面向对象的系统 object-oriented system 8. 继承层次 inheritance hierarchy Unit Six: Database Unit Six/Section A
I. Fill in the blanks with the information given in the text: 1. flat 2. data
3. application; administrators 4. conceptual 5. tables
6. fragmented; replicated 7. structured
8. entity-relationship; attributes
II. Translate the following terms or phrases from English into Chinese and vice versa: 1. end user 最终用户，终端用户 2. atomic operation 原子操作
3. database administrator 数据库管理员 4. relational database model 关系数据库模型 5. local data 本地数据
6. object-oriented database 面向对象数据库
7. database management system (DBMS) 数据库管理系统 8. entity-relationship model (ERM) 实体关系模型 9. distributed database 分布式数据库 10. flat file 平面文件
11. 二维表 two-dimensional table 12. 数据属性 data attribute 13. 数据库对象 database object 14. 存储设备 storage device
15. 数据类型 data type
16. 数据插入与删除 data insertion and deletion 17. 层次数据库模型 hierarchical database model 18. 数据库体系结构 database architecture 19. 关系数据库管理系统 relational database management system (RDBMS)
20. 全局控制总线 global control bus
III. Fill in each of the blanks with one of the words given in the following list, making changes if necessary:
A database is any collection of data organized for storage in a computer memory and
designed for easy access by authorized users. The data may be in the form of text, numbers, or
encoded graphics. Small databases were first developed or funded by the U.S. government for
agency or professional use. In the 1960s, some databases became commercially available, but their use was funnelled (传送) through a few so-called research centers that collected
information inquiries and handled them in batches. Online databases—that is, databases
available to anyone who could link up to them by computer—first appeared in the 1970s.
Since their first, experimental appearance in the 1950s, databases have become so important
that they can be found in almost every field of information. Government, military, and
industrial databases are often highly restricted, and professional databases are usually of
limited interest. A wide range of commercial, governmental, and nonprofit databases are
available to the general public, however, and may be used by anyone who owns or has access