User Charge Estimation in Numeric Online Databases: A Methodology |
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Page 2
... necessary to analyze the problems associated with the new , and in principle more appropriate , charging bases and to develop methods for solving them . The goals of this study are : to identify and analyze the problems associated with ...
... necessary to analyze the problems associated with the new , and in principle more appropriate , charging bases and to develop methods for solving them . The goals of this study are : to identify and analyze the problems associated with ...
Page 33
... necessary extensions to the file descriptions in the previous parts are defined precisely . However , here the scope of the study has made it necessary to define the file organization description only for the two file organization types ...
... necessary extensions to the file descriptions in the previous parts are defined precisely . However , here the scope of the study has made it necessary to define the file organization description only for the two file organization types ...
Page 5
... necessary if telecommunications vendors start charging on the basis of transmitted characters [ 12 ] ) ; in addition to query costs , the approach must provide understandable and rich enough descriptions of query results for user ...
... necessary if telecommunications vendors start charging on the basis of transmitted characters [ 12 ] ) ; in addition to query costs , the approach must provide understandable and rich enough descriptions of query results for user ...
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