User Charge Estimation in Numeric Online Databases: A Methodology |
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Page 1
... BDBs will be put into daily use also in public libraries . BDBs have become essential both in scientific and technical communication and in the dissemination of other literature . However , seeking information from BDBS is only one part ...
... BDBs will be put into daily use also in public libraries . BDBs have become essential both in scientific and technical communication and in the dissemination of other literature . However , seeking information from BDBS is only one part ...
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... BDBs generally provide only the latter ; references as whole or the data contained in them are seldom the final answers the user is looking for . · The structural differences between BDBS and NDBS can be divided into differences in ...
... BDBs generally provide only the latter ; references as whole or the data contained in them are seldom the final answers the user is looking for . · The structural differences between BDBS and NDBS can be divided into differences in ...
Page 1
... BDBs and they earn more revenue than BDBS for their producers and vendors . [ ChHe - 84 ] [ Fost - 84 ] [ Heim - 82 ] [ RuHa - 84 ] The NDBS differ in many respects from the traditional BDBs . Firstly , they contain information ( as ...
... BDBs and they earn more revenue than BDBS for their producers and vendors . [ ChHe - 84 ] [ Fost - 84 ] [ Heim - 82 ] [ RuHa - 84 ] The NDBS differ in many respects from the traditional BDBs . Firstly , they contain information ( as ...
Contents
USER CHARGING | 13 |
THE RELATIONAL DATA MODEL | 20 |
CARDINALITY ESTIMATION IN NUMERIC ONLINE | 32 |
Copyright | |
7 other sections not shown
Common terms and phrases
A-names access strategy Appendix approach attribute description set attribute name set attribute selectivity attribute values attributes PRODUCT-NO basis BDBs candidate keys cardinality estimation charging methods CODATA components computed connect-time considered constructed data model database files Database Management Database Management Systems database user developed elementary predicates English Summary example expression F1 and F2 FD-set file design file organization file structures Finland functional dependencies implementation information retrieval Information Science intermediate files inverted file Järvelin join attribute join predicate julkaisuja manipulation MANUF-NO MARKET-SHARE methodology n-tuple NDBs Numeric Databases online databases operand file description procedure cost model processing cost PRODUCTS file QSALES query cardinality query cost modelling query negotiation query optimization query processing query results r-card r-description RA operations records relational algebra relational data model restriction predicate result file description SIGMOD sort-key storage parameters Systems TAHITI TRADEMARK TYPE unit charges University of Tampere upper bound user charge estimation vendor