JPS61273633A - Joint processing system for decentralized data base - Google Patents

Joint processing system for decentralized data base

Info

Publication number
JPS61273633A
JPS61273633A JP11582485A JP11582485A JPS61273633A JP S61273633 A JPS61273633 A JP S61273633A JP 11582485 A JP11582485 A JP 11582485A JP 11582485 A JP11582485 A JP 11582485A JP S61273633 A JPS61273633 A JP S61273633A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
part
hash
processing
number
tuples
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11582485A
Inventor
Taku Okazaki
Yasuo Yamane
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To improve the processing efficiency in a joint process by transmitting the number of tuples at the side having the smaller number of hash sorts with the hash packets at both sites according to the result of the hash sorting.
CONSTITUTION: When a hash processing part 3 of a processor 1 is started, the tuples of the desired relation are read successively outpof a data base. These tuples are sorted to one of hash packets 11-0W11-p corresponding to the hash function valve of the prescribed join field value. then the number of tuples are informed to a short informing part 4. The part 4 transfers the number of tuples to a communication processing part 2 and an array comparison part 5. The part 5 receives the number of hash sorts from the site at the remote side and compares them with those at the own site. Then the part 5 transmits the tapples sorted to the packets even with the packet having a small number of hash sorts of the own site. The result of said comparison is sent to a joint processing part 6 for execution of the joint processing with the tuples received from the remote side for the packet whose joint processing should be applied at the own site.
COPYRIGHT: (C)1986,JPO&Japio
JP11582485A 1985-05-29 1985-05-29 Joint processing system for decentralized data base Pending JPS61273633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11582485A JPS61273633A (en) 1985-05-29 1985-05-29 Joint processing system for decentralized data base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11582485A JPS61273633A (en) 1985-05-29 1985-05-29 Joint processing system for decentralized data base

Publications (1)

Publication Number Publication Date
JPS61273633A true true JPS61273633A (en) 1986-12-03

Family

ID=14672015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11582485A Pending JPS61273633A (en) 1985-05-29 1985-05-29 Joint processing system for decentralized data base

Country Status (1)

Country Link
JP (1) JPS61273633A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05128164A (en) * 1990-03-27 1993-05-25 Internatl Business Mach Corp <Ibm> Data base processor
US5613142A (en) * 1994-03-16 1997-03-18 Mitsubishi Denki Kabushiki Kaisha Join processing system and method for joining relations based on join fields in a relational database
US7093092B2 (en) 2002-12-10 2006-08-15 Isic Corporation Methods and apparatus for data storage and retrieval
JP2009238008A (en) * 2008-03-27 2009-10-15 Nippon Telegr & Teleph Corp <Ntt> Distributed index coupling method and system
WO2013145501A1 (en) * 2012-03-27 2013-10-03 日本電気株式会社 Combined process system and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05128164A (en) * 1990-03-27 1993-05-25 Internatl Business Mach Corp <Ibm> Data base processor
US5613142A (en) * 1994-03-16 1997-03-18 Mitsubishi Denki Kabushiki Kaisha Join processing system and method for joining relations based on join fields in a relational database
US7093092B2 (en) 2002-12-10 2006-08-15 Isic Corporation Methods and apparatus for data storage and retrieval
JP2009238008A (en) * 2008-03-27 2009-10-15 Nippon Telegr & Teleph Corp <Ntt> Distributed index coupling method and system
WO2013145501A1 (en) * 2012-03-27 2013-10-03 日本電気株式会社 Combined process system and method

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