JPS648441A - Character string retrieving system - Google Patents

Character string retrieving system

Info

Publication number
JPS648441A
JPS648441A JP62162326A JP16232687A JPS648441A JP S648441 A JPS648441 A JP S648441A JP 62162326 A JP62162326 A JP 62162326A JP 16232687 A JP16232687 A JP 16232687A JP S648441 A JPS648441 A JP S648441A
Authority
JP
Japan
Prior art keywords
character string
text
characters
retrieved
character
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
JP62162326A
Other languages
Japanese (ja)
Inventor
Tadashi Hirose
Makoto Nomi
Kazuo Nakao
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62162326A priority Critical patent/JPS648441A/en
Publication of JPS648441A publication Critical patent/JPS648441A/en
Pending legal-status Critical Current

Links

Landscapes

  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE:To improve processing efficient at the time of retrieving various character strings in the same text by previously searching the positions of specific characters in the text. CONSTITUTION:The titled system is provided with a text table 1, an address table 2, a leading address table 3 and the table of a character string 4 to be retrieved. Characters are extracted from the head of the character string one by one, the positions of the characters on the text are recognized by the addresses of entries corresponding to the characters in the address table 3 and whether the character string exists in the position or not is decided from the table 2 based on the decided result whether the addresses of two entries for respective characters in the character string 4 are continued or not. Since only the address values in the address table are used for deciding whether the character string to be retrieved exists on the position or not and an address indicating the succeeding position of the character to be retrieved is stored in said constitution, data access can be executed only by the number of times of appearance of a character included in the character string to be retrieved in the text, so that the efficiency of retrieval processing can be improved.
JP62162326A 1987-07-01 1987-07-01 Character string retrieving system Pending JPS648441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162326A JPS648441A (en) 1987-07-01 1987-07-01 Character string retrieving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162326A JPS648441A (en) 1987-07-01 1987-07-01 Character string retrieving system

Publications (1)

Publication Number Publication Date
JPS648441A true JPS648441A (en) 1989-01-12

Family

ID=15752411

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162326A Pending JPS648441A (en) 1987-07-01 1987-07-01 Character string retrieving system

Country Status (1)

Country Link
JP (1) JPS648441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4986933A (en) * 1989-03-31 1991-01-22 Shoei Chemical Inc. Resistor composition
US5357431A (en) * 1992-01-27 1994-10-18 Fujitsu Limited Character string retrieval system using index and unit for making the index

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4986933A (en) * 1989-03-31 1991-01-22 Shoei Chemical Inc. Resistor composition
US5357431A (en) * 1992-01-27 1994-10-18 Fujitsu Limited Character string retrieval system using index and unit for making the index

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