数据模型描述 meaning in Chinese
data model description
Examples
- The conceptual model of database is illustrated with e - r graph . after that , logical design and physical design of database are partly accomplished , and some designing principles of them are analyzed , such as external schema , cluster and index design and data type choosing
在此基础上使用e - r数据模型描述了这些信息内容，实现了数据库的概念设计，并部分实现了数据库的逻辑设计和物理设计，分析了资源配置系统数据库逻辑和物理设计的原则，如外模式、簇集、索引设计以及数据类型的选择等。