sql server教程:数据库的基础知识主要介绍一些基本概念，及重点概念的相关知识点的介绍。关系数据库的相关知识点,关系模型关系数据库理论,数据库设计,数据库设计的任务、内容、步骤及概念结构设计和逻辑结构设计等。 -sql server tutorial: basic knowledge of databases introduces some basic concepts, and focus on the concept of knowledge-point presentation. Knowledge of relational database, the relational model relational database theory, database design, database design task, content, steps and the logic of the concept of structural design and structural design.