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数 据 库 原 理 Fundamentals of Database • 参考文献 • 1.数据库原理与方法 • 2.数据库导论 1 郑若忠 王 珊 Development History of Database • 1.W.Backman 62 年: • IDS—Integrated Data Store • 2. System Development Corporation • 63---Development and Management of a Com• puter_Centered Database • 65---Development and Management of a Com• puter_Centered Database 2 Development-------------------- 2 • • • • • Data Independence Data Share Cross-access Expending and Redundancy Model and Data Languages 3 3.Conference On DAta SYstem Languages • • • • • • • CODASYL DBTG---Data Base Task Group 67--71 Data language : DDL---Data Description Language DML---Data Manipulation Language DBTG---database Network Model 4 4. IBM-------------------------------• IMS==Hierarchical Model 5 5.E.F.Codd--------------------------• A Relational Model of Data of Large Share Data Banks • Relational Model • relational algebra calculate • data dependency • Data Normalization Theory and Method 6 •END