Applying distinct hash-join distributions of operators to both e

Details Applying distinct hash-join distributions of operators to both e Applying distinct hash-join distributions of operators to both e

1997-04-18

1999-02-16

Amsbury, Wayne

Data processing: database and file management or data structures

Database design

Data structure types

707 1, 707 3, 707 4, 707 6, 707 8, G06F 1730

Patent

active

058730745

ABSTRACT:
A computer-based method and system of processing records read respectively from first and second related tables of a database includes determining whether data contained in the records read from the first or second tables is unevenly distributed. Records corresponding to evenly distributed data are searched for matches using a first set of instances of the hash-join operator, and records corresponding to data which is unevenly distributed are searched for matches using a second set of instances of a hash-join operator.

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Li-Yan Yuan, "VLDB '92", Proceedings of the 18th International Conference on Very Large Data Bases, Aug. 23-27, 1992, Vancouver, Canada.

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