Patent
Rocking mechanism for version object
Shiyauuben Shi,Piitaa Chiyunntsui Uon +1 more
- 08 Nov 1994
2
TL;DR: In this article, the authors propose a method and a system for controlling simultaneous access to an object which is made into a version by means of plural users in a distributed data processing environment.
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Abstract: PURPOSE: To provide a method and a system for controlling simultaneous access to an object which is made into a version by means of plural users in a distributed data processing environment. CONSTITUTION: Write locking for the first part of a data set to which the user desires access is searched. When the write locking is not detected, a request is permitted by permitting write access to the first part. When write locking is set, the other user inhibits the change, but, the read access by the other user to the first part is permitted. When the second user desires the access to the data set to a second part and the second part has the first part, several common elements and elements which are not shared, the request of the second user is partially permitted for a part of the second part, which is not shared with the first part.
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Citations
Patent
Exclusive access controlling apparatus, exclusive access controlling method and recording medium recorded with exclusive access controlling program, for electronic information
Junji Ikeda,Hiroyuki Akamatsu,Tsuyoshi Ebata,Nobuyuki Kanaya +3 more
- 03 Apr 2001
TL;DR: In this paper, an electronic information name of electronic information prepared by attaching a version number of the electronic information with a unique appellation of the EI is distributed to users of EI. Based on this EI name, accesses to EI are conducted.
9
Patent
Method and apparatus for exclusive control of electronic information, and recording media of exclusive control program
Junji Ikeda,Hiroyuki Akamatsu,Tsuyoshi Ebata,Nobuyuki Kanaya +3 more
- 13 Jan 1999
TL;DR: In this article, a table holds version numbers of electronic information, which can be altered by requests for locking or unlocking electronic information by determining whether the request is acceptable or not, and the version numbers included in the electronic information are compared with the version number in the table.
References
Patent
File control system
Hiroyumi Inoue,Takahashi Yasutomo +1 more
- 27 Jun 1989
TL;DR: In this article, the authors propose to process data at a high speed by storing all compressed blocks in a block storage area despite the comparatively large capacity of a data file, where the data can be processed at high speed.
14
Patent
Exclusive priority control system
Toru Nishigaki,Toshiaki Tsuboi +1 more
- 31 Jan 1986
TL;DR: In this paper, the authors propose to improve the responsiveness of an exclusive priority control system by setting plural priority levels for a lock allocation queue and setting high priority to a short transaction of a high degree of emergency to shorten the queuing time for resources.
6
Patent
Data update informing method in data analysis system data base
Ono Hiroto,Fujimitsu Masafumi +1 more
- 06 Jul 1992
TL;DR: In this article, the uniqueness of data is preserved by giving the information of a message to call attention to update and an entry in the case that the update and the entry of the data are intended.
4
Patent
Method for exclusively controlling shared file
Fukuda Masahiro
- 21 Jan 1986
TL;DR: In this paper, a file control section is provided with a counter which counts the occupancy requesting number accepted from other host systems while the shared file 1 is occupied and, when the count value of the counter reaches a prescribed value, performs an interruption to the occupying host system and informs the host system that the counter reached the prescribed value.
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