JPS5731040A - Data comparison system - Google Patents
Data comparison systemInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4977536A (en) * | 1984-12-10 | 1990-12-11 | Canon Kabushiki Kaisha | Document processor |
-
1980
- 1980-07-31 JP JP10589480A patent/JPS5731040A/en active Pending
Cited By (1)
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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