User Charge Estimation in Numeric Online Databases: A Methodology |
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Page 26
... idea of the query result and modify the query if the result is not appropriate . Such descriptions are necessary in that query results describe varying objects , phenomena and / or relations . Due to often complex and unanticipated ...
... idea of the query result and modify the query if the result is not appropriate . Such descriptions are necessary in that query results describe varying objects , phenomena and / or relations . Due to often complex and unanticipated ...
Page 16
... idea of the derivation method is that restrictions do not destroy any of the operand FDs but , instead , add new FDs if the restriction predicate contains equi - predicates . Predicates with a equality comparison in a cavnf -predicate ...
... idea of the derivation method is that restrictions do not destroy any of the operand FDs but , instead , add new FDs if the restriction predicate contains equi - predicates . Predicates with a equality comparison in a cavnf -predicate ...
Page 23
... idea of the derivation method is that restrictions do not destroy any of the operand FDs but , instead , add new FDs if the restriction predicate contains elementary predicates with ' = ' as the comparison operator ( there are some ...
... idea of the derivation method is that restrictions do not destroy any of the operand FDs but , instead , add new FDs if the restriction predicate contains elementary predicates with ' = ' as the comparison operator ( there are some ...
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