When designing a database , you can use database designer to create , edit , or delete tables , columns , keys , indexes , relationships , and constraints 设计数据库时,可以使用数据库设计器创建、编辑或删除表、列、键、索引、关系和约束。
If your design is weak , you may not be able to get the results you want from your data , and may need to frequently redesign your database 如果数据库在设计时就有缺陷,则您有可能无法由数据中获得希望的内容,并且需要频繁地重新设计数据库。
When you design a database , you must first decide the tables that it needs , the type of data that goes in each table , and the users that can access each table 在设计数据库时,必须先确定数据库所需的表、每个表中数据的类型以及可以访问每个表的用户。
Jayaram s , myklebust a , gelhausen p . acsynt - a standardsbased system for parametric computer aided conceptual design of aircraft . aiaa 92 - 1268 刘祖铭,曹定国,吴有金,张金华,王浩伟,罗家枢.飞机结构腐蚀控制设计数据库研究.航空学报, 2002 , 23 ( 4 ) : 360 363
Provides links to topics describing the uses and advantages of various database objects you can use with the visual database tools to design a database 提供到主题的链接,这些主题描述可与可视化数据库工具一起用来设计数据库的各种数据库对象的使用和优点。