JPS5731040A - Data comparison system - Google Patents

Data comparison system

Info

Publication number
JPS5731040A
JPS5731040A JP10589480A JP10589480A JPS5731040A JP S5731040 A JPS5731040 A JP S5731040A JP 10589480 A JP10589480 A JP 10589480A JP 10589480 A JP10589480 A JP 10589480A JP S5731040 A JPS5731040 A JP S5731040A
Authority
JP
Japan
Prior art keywords
block
buffer
case
coincidence
lacking
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
JP10589480A
Other languages
Japanese (ja)
Inventor
Akio Takayanagi
Tadao Kinugasa
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.)
Fujitsu Ltd
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
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10589480A priority Critical patent/JPS5731040A/en
Publication of JPS5731040A publication Critical patent/JPS5731040A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/22—Arrangements for sorting or merging computer data on continuous record carriers, e.g. tape, drum, disc

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

PURPOSE:To easily grasp only a difference between before and after updating a data, by rearranging each block in a memory device by a key value, making key values correspond to each other, comparing them, and comparing the contents in case of coincidence of the key values. CONSTITUTION:Each block in memory devices 11, 12 is stored in work buffers 21, 22 in order of a block number by a sort function SOR. Subsequently, both buffers 21, 22 are read by 1 block each by a read device 41, and block numbers are compared by a comparison part 42. In case of coincidence, contents of these blocks are compared by a record comparison part 43, and in case a block of the buffer 22 corresponding to the buffer 21 is lacking, its block number and a character A showing supplementation are outputted to a memory device 31. On the contrary, if a block of the buffer 21 corresponding to the buffer 22 is lacking, a character D is outputted to the device 31. In this way, a difference between before and after adding, deleting, etc. a block of a data is grasped easily.
JP10589480A 1980-07-31 1980-07-31 Data comparison system Pending JPS5731040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10589480A JPS5731040A (en) 1980-07-31 1980-07-31 Data comparison system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10589480A JPS5731040A (en) 1980-07-31 1980-07-31 Data comparison system

Publications (1)

Publication Number Publication Date
JPS5731040A true JPS5731040A (en) 1982-02-19

Family

ID=14419606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10589480A Pending JPS5731040A (en) 1980-07-31 1980-07-31 Data comparison system

Country Status (1)

Country Link
JP (1) JPS5731040A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4977536A (en) * 1984-12-10 1990-12-11 Canon Kabushiki Kaisha Document processor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4977536A (en) * 1984-12-10 1990-12-11 Canon Kabushiki Kaisha Document processor

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