Method and apparatus for ranked join indices

Details Method and apparatus for ranked join indices Method and apparatus for ranked join indices

2007-02-27

2007-02-27

Pham, Khanh B. (Department: 2168)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000, C707S793000

Reexamination Certificate

active

10775056

ABSTRACT:
A method and apparatus for ranked join indices includes a solution providing performance guarantees for top-k join queries over two relations, when preprocessing to construct a ranked join index for a specific join condition is permitted. The concepts of ranking join indices presented herein are also applicable in the case of a single relation. In this case, the concepts herein provide a solution to the top-k selection problem with monotone linear functions, having guaranteed worst case search performance for the case of two ranked attributes and arbitrary preference vectors.

REFERENCES:
patent: 6871201 (2005-03-01), Yu et al.
patent: 2003/0061213 (2003-03-01), Yu et al.
patent: 2004/0002973 (2004-01-01), Chaudhuri et al.
Nicolas Bruno, Surajit Chaudhuri, Lusi Gravano, Top-K Selection Queries Over Relational Database: Mapping Strategies and Performance Evalution, Jun. 2, 2002, vol. 27, pp. 153-187.
Nicolas Bruno, Surajit Chaudhuri, Luis Gravano, Performance of Multiattribute Top-K Queries on Relational Systems, 2000.

Affiliated with

Also associated with

Rating

Method and apparatus for ranked join indices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for ranked join indices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for ranked join indices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3876303