Date, C.J. creator text xxu London Addison-Wesley Publication c1977 2nd ed. monographic eng

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xxiii, 536 p.: ill.; 24cm. Contents: Database system architecture: Basic concepts -- Storage structures -- Data models and data sublanguages -- The Relational approach: The Relational data model -- A Data sublanguage based on relational calculus -- A Data sublanguage based on relational algebra -- The Data sublanguage sequel -- Query by example -- Further normalization -- The External model -- Some relational systems -- The Hierarchical approach: The Architecture of an IMS system -- The IMS data model -- The IMS external model -- The IMS data sublanguage -- IMS storage structures -- IMS logical databases -- IMS secondary indexing -- The Network approach: The Architecture of a DBTG system -- The DBTG data model -- The DBTG external model -- The DBTG data sublanguage -- Security and integrity: Security -- Integrity -- Review, analysis, and comparisons: The Three approaches revisited. C.J. Date Includes index. Database systems QA76.9.D3.D37 0201144565 121102