User Charge Estimation in Numeric Online Databases: A Methodology |
From inside the book
Results 1-3 of 3
Page 5
... demands on the competence of librarians and information workers , however , are at least as high as before the sources of information i.e. databases in one's domain of activity must still be known , and the techniques of their use must ...
... demands on the competence of librarians and information workers , however , are at least as high as before the sources of information i.e. databases in one's domain of activity must still be known , and the techniques of their use must ...
Page 15
... demand for different types of data , data reliability , completeness and coverage , and differences in the value and usability of data from the user point of view are among the latter . It is obvious that some types of data in NDBs are ...
... demand for different types of data , data reliability , completeness and coverage , and differences in the value and usability of data from the user point of view are among the latter . It is obvious that some types of data in NDBs are ...
Page 9
... of Journalism . Tampere 1966. 280 s . , kuv . 8. Tyrni , Ilari , The Role of Income Requirements , Excess Demand and Cost Pricing in the Economic Process . Tampere 1966. 137 p . 9. Tyrni , Ilari , The Effect of Changes in.
... of Journalism . Tampere 1966. 280 s . , kuv . 8. Tyrni , Ilari , The Role of Income Requirements , Excess Demand and Cost Pricing in the Economic Process . Tampere 1966. 137 p . 9. Tyrni , Ilari , The Effect of Changes in.
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