User Charge Estimation in Numeric Online Databases: A Methodology |
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... mind . The architecture of the methodology is such that the methodology can be extended to further charging bases in IR ( e.g. data communication costs ) . Comprehensive treatment of the user charge estimation problem requires ...
... mind . The architecture of the methodology is such that the methodology can be extended to further charging bases in IR ( e.g. data communication costs ) . Comprehensive treatment of the user charge estimation problem requires ...
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... mind . Therefore they alone are not necessarily sufficient to satisfy anybody's needs . Sometimes the data in the databases are not more complete nor more up - to - date than those in the printed counterparts . In some cases the ...
... mind . Therefore they alone are not necessarily sufficient to satisfy anybody's needs . Sometimes the data in the databases are not more complete nor more up - to - date than those in the printed counterparts . In some cases the ...
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... mind . Full advantage of the modern charging methods can be achieved by providing the users with tools based on the methodology . REFERENCE LIST TO SUMMARY AND CONCLUSION OF THE STUDY REFERENCES Kalervo Järvelin : Conclusion 2.
... mind . Full advantage of the modern charging methods can be achieved by providing the users with tools based on the methodology . REFERENCE LIST TO SUMMARY AND CONCLUSION OF THE STUDY REFERENCES Kalervo Järvelin : Conclusion 2.
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