数据库设计和操作

摘要：《数据库原理》是计算机专业的一门基础课。主要讲述数据库的发展、结构以及应用的相关原理，课程的原理性很强。学生对该课程的学习主动性差，所以，要使学生更好地掌握课程的知识点，就需要任课教师将枯燥的原理用生动活泼的方式进行讲解，使学生对抽象、概括的原理，不仅有理性上的认识，更有感性上的认识，真正主动地掌握，吸收相关知识。作者本人根据一些实际经验，谈一谈，如何生动、形象地讲授《数据库原理》这一课程。
关键词：数据库；模式；外模式；内模式

Abstract："Database Principle" is a basic professional university computer courses. Story of the development of database structure and the related application of the principle is an important program. "Database Principle" of the principles of this program are strongly focused on the instructors, students acquire the relevant knowledge point. Students learn the principles of the curriculum has a strong initiative, therefore, giving students a better grasp of the knowledge of the course, Instructors need to look dry with a lively way to explain the principle, so that students can abstract general principles, The understanding is not a rational understanding of the emotional, to truly grasp the initiative, the absorption correlatio