Database Management Systems: A Technical Review |
Contents
Acknowledgments | 11 |
Logical Structuring and Data Independence | 17 |
11 | 64 |
Copyright | |
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Common terms and phrases
A₁ ADABAS Address Converter allows application programs automatically Backup batch buffer pool Central Version chain COBOL CODASYL contains control key copy data definition Data Description Language Data Manipulation Language data structures database key database record DBMOD DBMS defined deleted dependent segments described DML commands Entry Data Set ESDS records facilities Figure five DBMSs format free space function HDAM HIDAM hierarchical identifies IDMS implemented Indexed Sequential interface KEYQ KSDS link edited linkpath loaded location mode locked logical record logical structure Master Data Set member records modules multiple multithreaded number of records on-line operating system optionally owner parameters physical block physical database file Physical Organisation Pointer Array preprocessor re-entrant recovery relationships reorganised requests retrieval rollback run-unit schema segment type sequence Sequential Access SHSAM space management specified subschema TOTAL utility Variable Entry Data virtual machines VSAM ESDS