Data processing: database and file management or data structures – Database design – Data structure types
Patent
1998-02-03
2000-11-14
Breene, John
Data processing: database and file management or data structures
Database design
Data structure types
707 10, 707201, 709201, 709213, G06F 1730
Patent
active
061483052
ABSTRACT:
In a data processing method of a coupling facility connected to a plurality of computer or processing nodes which access files of different formats to share files therebetween, it is possible to minimize overhead of the format conversion between files. Stored in the coupling facility is a channel information table including information of formats of files to be accessed by computers. A processing node updates a file and sends an update file resultant from the update to the coupling facility. On receiving the update file, the coupling facility refers to the table to convert the file into files of the formats related to the processing nodes sharing the file and stores the converted files in a file cache. Receiving a request from a processing node for latest data of the shared file, the coupling facility selects one of the converted update files related to the requesting node and sends the selected file thereto.
REFERENCES:
patent: 5564019 (1996-10-01), Beausoleil et al.
patent: 5721914 (1998-02-01), DeVries
patent: 5812843 (1998-09-01), Yamazaki et al.
patent: 5864679 (1999-01-01), Kanai et al.
Ikegaya Naoko
Yamada Hiroshi
Yoshioka Masaichiro
Breene John
Hitachi , Ltd.
Robinson Greta
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