User Charge Estimation in Numeric Online Databases: A Methodology |
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Page 31
... association with the treatment of the respective subproblems in Parts I - III . The n - tuple representation is also used for hw / sw environment description . This description , called the storage parameters , is a fourteen - tuple and ...
... association with the treatment of the respective subproblems in Parts I - III . The n - tuple representation is also used for hw / sw environment description . This description , called the storage parameters , is a fourteen - tuple and ...
Page 4
... association of products to other entities ( e.g. MANUF - NO ) . By examining the attribute values of the attribute PRODUCT - NO one would recognize the following : • there are 250000 different values for this attribute ( this is called ...
... association of products to other entities ( e.g. MANUF - NO ) . By examining the attribute values of the attribute PRODUCT - NO one would recognize the following : • there are 250000 different values for this attribute ( this is called ...
Page 7
... association of products with other entities ( e.g. MANUF - NO ) . Let us assume that by examining the attribute values of the attribute PRODUCT - NO one would state the following : · · • there are 250000 different values for this ...
... association of products with other entities ( e.g. MANUF - NO ) . Let us assume that by examining the attribute values of the attribute PRODUCT - NO one would state the following : · · • there are 250000 different values for this ...
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