Title:
DEVICE AND METHOD FOR MANAGING VERSION
Document Type and Number:
Japanese Patent JP3245047
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To remove the overlapped storage of records common to respective generations and to make it unnecessary to switch files among respective generations.
SOLUTION: A generation integration file 10 allows a data substance and date information to be attribute information for the data substance to correspond to each retrieval key item. In the case of preparing a succeeding generation, the file 10 is copied and the data substance of a specific record is corrected. Only the corrected record is extracted, a new date information is added to the record and the record is additionally registered in the file 10. In the case of deleting a certain record, a deletion flag is used. When a retrieval date is specified, the retrieval date is set up as a maximum value and a record most close to the date is specified in each retrieval key item, so that the record group of a required generation can be retrieved.
Inventors:
Masamichi Ohtsuka
Application Number:
JP7503096A
Publication Date:
January 07, 2002
Filing Date:
March 28, 1996
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G06F12/00; (IPC1-7): G06F12/00
Domestic Patent References:
| JP6337427A | ||||
| JP2196349A | ||||
| JP3166634A | ||||
| JP2259942A | ||||
| JP6022254A | ||||
| JP728906A |
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)