【摘要】 "数据库原理"课程是广西师范大学计算机科学与信息工程学院计算机专业及信息管理专业本科生的必修课,关系代数中的"除"运算是该课程的一个重难点。文章结合笔者多年的教学研究和实践,对关系代数"除"运算的教学进行了探讨,希望能够有益于该课程教学的研究。更多还原

【Abstract】 The "Database Principles" course is a compulsory course for undergraduates majoring in computer science and information management in Computer Science and Information Technology College of Guangxi Normal University. The "Division" operation in relational algebra is a major difficulty in the course. The thesis combines the author’s many years of teaching research and practice, and discusses the teaching of the relational algebra "Division" operation, hoping to benefit the research of the course teaching.更多还原