## User Charge Estimation in Numeric Online Databases: A Methodology |

### From inside the book

Results 1-3 of 17

Page 14

A Our approach is an extension of the approaches by ( SACL - 79 ] and [ YuLi -

82 ) and solves the problem with multiple

The procedure is as follows the functions referred to are defined in the Appendix

...

A Our approach is an extension of the approaches by ( SACL - 79 ] and [ YuLi -

82 ) and solves the problem with multiple

**elementary predicates**on one attribute .The procedure is as follows the functions referred to are defined in the Appendix

...

Page 28

Let a and b be any integers , such that a 2 b . a - b , if a > b sub ( a , b ) = 1 ,

otherwise . PREDICATE MANIPULATION Given a general predicate PRED , the

function elem - set ( PRED ) gives the set of the

PRED ...

Let a and b be any integers , such that a 2 b . a - b , if a > b sub ( a , b ) = 1 ,

otherwise . PREDICATE MANIPULATION Given a general predicate PRED , the

function elem - set ( PRED ) gives the set of the

**elementary predicates**of whichPRED ...

Page 24

It estimates automatically the minimum cost of retrieving the target records for any

Boolean predicate in six file ... For example , it allows Boolean predicates with the

following properties :

It estimates automatically the minimum cost of retrieving the target records for any

Boolean predicate in six file ... For example , it allows Boolean predicates with the

following properties :

**elementary predicates**between an attribute name and a ...### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Contents

NUMERIC DATABASES | 4 |

USER CHARGING | 13 |

THE RELATIONAL DATA MODEL | 20 |

Copyright | |

7 other sections not shown

### Common terms and phrases

A-names actual addition advance Appendix applications approach arguments associated assumed attribute description set attribute name basis BDBs block bound cardinality estimation characteristics combined communication complex components computed considered constructed contain context cost estimation COUNTRY database defined definition derived described developed distributions elementary predicates English Summary essential example expression extended file descriptions formal function functional dependencies given gives implementation intermediate join join attribute lower Management manipulation MARKET-SHARE MARKETS means method methodology NDBs necessary needed operand file operations optimization organization parameters possible printed problems procedure processing processing-based PRODUCT PRODUCT-NO projection query cost modelling RA operations range records references relational represented respect restriction result result file retrieved sample query selectivity Services sort sources standard storage structure Systems TAHITI Tampere TRADEMARK transfer TYPE unit user charge estimation values