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4。Module IV: Introducing to Data and Data Management Introduction, Data and Information, Database and Data Base Management System, Components of Database System, Basics of Database Management System, File-based System and Database Management System, Advantages of using Database over File based system, Data Dictionary andMetadata, ANSI-SPARC Architecture, Database Users, Role of Database Administrator (DBA) and Data Administrator(DA), Database环境，数据库，特征或功能或数据库系统的优势，数据库的限制。
学期IV
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