conceptual database design

基本解释

The requirements are analysed in chapter 2, then the database design which includes conceptual and logical design are introduced in detail in chapter 3.
第3章介绍系统设计，详细介绍了图书馆系统的数据库设计，给出了概念模型和逻辑模型。
This thesis which combines database theory with the actual situation of Chengdu railway bureau and its subordinate agencies accomplishes conceptual design and logic design of the database.
然后结合数据库相关理论和成都铁路局及其下级机构的实际情况，进行了数据库概念设计、逻辑设计。
Narrow sense database design includes three stages: Conceptual design, logical design and physical design. This article discusses how to optimize the database performance on the three stages.
狭义数据库设计包括三个阶段：概念设计、逻辑设计和物理设计，故从这三个阶段探讨如何优化数据库的性能。
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