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Title:
INTELLIGENT INQUIRY PROCESSING METHOD
Document Type and Number:
Japanese Patent JPH04152440
Kind Code:
A
Abstract:

PURPOSE: To improve the inquiry processing performance by selecting the differ ent processing procedures between the inquiry processing and executing states based on the statistic information following the change of the data base charac teristic.

CONSTITUTION: The filtering processing result, the retrieving conditions, etc., are transferred between a channel device 71 and an intelligent file controller 72. An input inquiry is analyzed and a processing procedure is decided. The relative algebraic operation is segmented and a processing request is given to the controller 72. This processing request is interpreted and a physical input/ output request is given to a disk 73. A control unit page of a data base is read and set to a local storage 720. Then the selection, the limitation, the projection, the result, etc., are computed and filtered. These computing and filtering results are set to a DBMS 10 and then edited. Then the inquiring result is outputted to an application program.


Inventors:
TSUCHIDA MASASHI
YONEDA SHIGERU
NAKANO YUKIO
Application Number:
JP1990000276289
Publication Date:
May 26, 1992
Filing Date:
October 17, 1990
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
G06F12/00; G06F17/30; (IPC1-7): G06F12/00; G06F15/40