Method, device, and computer program for merge-sorting record groups having tree structure efficiently

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United States of America Patent

PATENT NO 9612799
SERIAL NO

14569062

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Importance

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Abstract

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A first record group and a second record group having a tree structure are merge-sorted. The first record group and the second record group are acquired, and depth information indicative of the hierarchical depth of the tree structure is attached as metadata to key information on each node of each record included in the acquired first record group and second record group. The depth information is compared in preference to the key information to perform merge sort sequentially.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashizaki, Hiroshige Kawasaki, JP 7 63
Ito, Megumi Yokohama, JP 22 136

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