User Charge Estimation in Numeric Online Databases: A Methodology |
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Page 24
... acceptance in the management of numeric data for CAD / CAM applications ( e.g. [ HaLo - 82 ] ) . The results of this study on user charge estimation in the context of the RDM cannot , of course , be applied as such to NDBs based on ...
... acceptance in the management of numeric data for CAD / CAM applications ( e.g. [ HaLo - 82 ] ) . The results of this study on user charge estimation in the context of the RDM cannot , of course , be applied as such to NDBs based on ...
Page 14
... accepted by each of these elementary predicates is recognized and combined by the functions n - combine for numeric attributes and c - combine for character string attributes . For numeric attributes , the function p - range gives the ...
... accepted by each of these elementary predicates is recognized and combined by the functions n - combine for numeric attributes and c - combine for character string attributes . For numeric attributes , the function p - range gives the ...
Page 15
... the range accepted by the predicate for a given numeric attribute . When this range is compared to the attribute's original range Kalervo Järvelin : Cardinality Estimation in NDBs 15 Attribute descriptions for restrictions 15.
... the range accepted by the predicate for a given numeric attribute . When this range is compared to the attribute's original range Kalervo Järvelin : Cardinality Estimation in NDBs 15 Attribute descriptions for restrictions 15.
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