International Business Machines Corporation

Richard L Dempsey

Mimi Phuong-Thao Vo

Tri Quac Ha

Denice A DeSimone

Anne C Fockler

A method, apparatus, article of manufacture, and a memory structure for transforming a query to reduce the need for merging the results from a number of result lists. The method comprises the steps of forming at least one subquery from the query, executing the formed subquery to generate a result list comprising a plurality of first result elements, and replacing the executed subquery with a logical combination of the first result elements to form a transformed query. The apparatus comprises a means for forming at least one subquery from the query, a means for executing the formed subquery to generate a plurality of first result elements, and a means for replacing the executed subquery with a logical combination of the first result elements to form a transformed query. In one embodiment, the invention comprises a program storage device, tangibly embodying a sequence of instructions for performing the method steps described above.

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Los Gatos, CA, United States of America

Richard L Dempsey