JPS6413646A - Index maintenance system for file with plural indexes - Google Patents

Index maintenance system for file with plural indexes

Info

Publication number
JPS6413646A
JPS6413646A JP62170059A JP17005987A JPS6413646A JP S6413646 A JPS6413646 A JP S6413646A JP 62170059 A JP62170059 A JP 62170059A JP 17005987 A JP17005987 A JP 17005987A JP S6413646 A JPS6413646 A JP S6413646A
Authority
JP
Japan
Prior art keywords
sorting
file
index
data
input
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
JP62170059A
Other languages
Japanese (ja)
Inventor
Toru Kurasawa
Tsugunori Doi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62170059A priority Critical patent/JPS6413646A/en
Publication of JPS6413646A publication Critical patent/JPS6413646A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To shorten time required for maintenance of indexes by collectively sorting data of plural indexes based on the classification code of an indexed transaction file to minimize the number of input/output operations of the transaction file accompanied with maintenance of indexes. CONSTITUTION:Data of the index of inputted transaction data is converted in accordance with the attribute of data to regenerate a converted record, and this record is stored in an external storage device 6 as an input file 7 for sorting. After all transaction data are converted and are stored in the input file 7 for sorting, the sorting processing is performed and plural index parts are generated for each index in accordance with an output file obtained as the result of this processing. Consequently, it is unnecessary to generate plural input files for sorting by reading in transaction data for each index to perform the sorting processing plural times in the conventional manner. Thus, the number of input/output operations of the external storage device 6 is reduced to shorten the processing time by this reduction.
JP62170059A 1987-07-07 1987-07-07 Index maintenance system for file with plural indexes Pending JPS6413646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62170059A JPS6413646A (en) 1987-07-07 1987-07-07 Index maintenance system for file with plural indexes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62170059A JPS6413646A (en) 1987-07-07 1987-07-07 Index maintenance system for file with plural indexes

Publications (1)

Publication Number Publication Date
JPS6413646A true JPS6413646A (en) 1989-01-18

Family

ID=15897862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62170059A Pending JPS6413646A (en) 1987-07-07 1987-07-07 Index maintenance system for file with plural indexes

Country Status (1)

Country Link
JP (1) JPS6413646A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02190971A (en) * 1989-01-20 1990-07-26 Nec Corp Index updating system
US7693610B2 (en) 2001-07-10 2010-04-06 Yingco Electronic Inc. Remotely controllable wireless energy control unit
US11245965B2 (en) 2008-05-29 2022-02-08 Rovi Guides, Inc. Systems and methods for alerting users of the postponed recording of programs

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02190971A (en) * 1989-01-20 1990-07-26 Nec Corp Index updating system
US7693610B2 (en) 2001-07-10 2010-04-06 Yingco Electronic Inc. Remotely controllable wireless energy control unit
US7925388B2 (en) 2001-07-10 2011-04-12 Yingco Electronics, Inc. Remotely controllable wireless energy control unit
US11245965B2 (en) 2008-05-29 2022-02-08 Rovi Guides, Inc. Systems and methods for alerting users of the postponed recording of programs
US11689768B2 (en) 2008-05-29 2023-06-27 Rovi Guides, Inc. Systems and methods for alerting users of the postponed recording of programs

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