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WHO NEEDS A DATABASE MANAGEMENT SYSTEM AND WHY?
CHOOSING A DATABASE MANAGEMENT SYSTEM
14 other sections not shown
analysis application program attributes Bachman Diagram chapter Cobol CODASYL components corporate data model costs Customer Number Customer Order database Customer record data definitions data dictionary data elements Data Manipulation Language data model data processing data relationships data structures database design DBMS applications DBMS environment DBMS products DBMS software defined dependent Dependent segments E-R diagram Employee end-user entities example flat file free space function hardware identified IDMS illustrated in Figure implementation important installation integrity Invoice Number Jones Mfg logical mainframe many-to-many many-to-many relationship member record needed nodes Normal Form occurrence on-line one-to-many operating system Order Date Order record Order Table organizational owner performance personal computers pointer query language record type redundancy related records relational database requirements definition Salesperson Second Normal Form segment selection Small clip specific stored technical techniques term Third Normal Form tion transaction update volumes