DB 论文阅读:A Relational Model of Data for Large Shared Data Banks
关系模型是现代数据库的理论基础。1969 和 1970 年,Codd 的两篇论文
《Derivability, Redundancy and Consistency of Relations Stored in Large
Data Banks》和《A Relational Model of Data for Large Shared Data
Banks》提出了关系模型理论,为后续几十年数