Access Restriction

Author Cárdenas, Alfonso F.
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Language English
Subject Keyword Information storage and retrieval ♦ Inverted file organization ♦ Query answering ♦ Data base performance and measurement ♦ Data base architecture ♦ Secondary index organization
Abstract The need to envision and architecture data base systems in a hierarchical level by level framework is stressed. The inverted data base (file) organization is then analyzed, considering implementation oriented aspects. The inverted directory is viewed realistically as another large data base which itself is subjected to inversion. Formulations are derived to estimate average access time (read only) and storage requirements, formalizing the interaction of data base content characteristics, logical complexity of queries, and machine timing and blocking specifications identified as having a first-order effect on performance. The formulations presented are necessary to be used in conjunction with any index selection criteria to determine the optimum set of index keys.
Description Affiliation: IBM Research Lab, San Jose, CA (Cárdenas, Alfonso F.)
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-08-01
Publisher Place New York
Journal Communications of the ACM (CACM)
Volume Number 18
Issue Number 5
Page Count 11
Starting Page 253
Ending Page 263

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Source: ACM Digital Library