数据库原理教学中三级模式结构的探讨

数据库原理是计算机专业的一门专业必修课,在此课程的教学中,笔者认识到数据库系统的三级模式结构是一个非常重要的知识点,可贯穿于该门课的教学。此三级模式结构分为模式、内模式和外模式,笔者从数据的独立性、标准语言SQL的概念和数据库系统的设计几个方面对该模式结构进行了探讨,继而提出了数据库原理教学的三级模式结构。

Discussion on Three classes Mode Structure in Teaching Of Database Principle Curriculum

Database principle is a special required course for the student in computer fields. In the teaching of the course, the author find that three classes mode structure is a very important knowledge,which can tie the teaching of the course. The structure makes up of Schema, External Schema and Internal Schema. The author discussion the structure on data independence, the concept about standard language SQL, the design of database system and so on. Then the author puts forward the three classes of teaching mode about database principle.