Retrieval—Update speed tradeoffs using combined indices
- 1 December 1971
- journal article
- Published by Association for Computing Machinery (ACM) in Communications of the ACM
- Vol. 14 (12) , 775-776
- https://doi.org/10.1145/362919.362933
Abstract
In a paper in the November 1970 Communications of the ACM, V.Y. Lum introduced a technique of file indexing named combined indices. This technique permitted decreased retrieval time at the cost of increased storage space. This paper examines combined indices under conditions of file usage with different fractions of retrieval and update. Tradeoff curves are developed to show minimal cost of file usage by grouping various partially combined indices.Keywords
This publication has 2 references indexed in Scilit:
- Multi-attribute retrieval with combined indexesCommunications of the ACM, 1970
- File Structures for On-Line SystemsPublished by Springer Nature ,1969