An Introduction to Database Systems, Volume 1Textbook on data processing methodology for the design and implementation of database information systems - outlines three distinct theoretical approaches to database systems design, namely, the relational, hierarchical, and network analysis approaches, and discusses the problems of computer confidentiality and integrity, etc. Diagrams and references. |
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3NF relations algebraic appropriate binary relations BIRD PDB Chapter CITY CODASYL constraints contains corresponding COURSE current of run-unit data model data sublanguage data submodel data-item database-key DBMS DBTG defined definition delete dependent segment DL/I DSL ALPHA DSM relation DSMD E. F. Codd entry example exist FIND functionally dependent HDAM HIDAM hierarchical sequence HISAM insert language LOCATION MODE logical child logical database logical parent London OSAM owner P-SP PDBR occurrence PNAME pointers PREREQ primary key procedure projection RANGE SP relational algebra relational calculus relational model rence retrieval root segment S-SP schema Section SEGM segment occurrence segment types sequence field SET OCCURRENCE SELECTION SNAME SP occurrence specified statement STATUS storage structure STUDENT sub-schema supplier numbers supplier S1 suppliers who supply suppliers-and-parts third normal form tuple TYPE IS CHARACTER UPDATE