Patent
A data processing network having a distributed data file access control
Thomas Piatt Daniell,Robert Carnegie Harding,Neil Judd Lewis,Sven Halvar Hansson Nauckhoff +3 more
- 06 Oct 1982
17
TL;DR: In this paper, the authors propose a distributed access control of peer elements by which, requests for access to data of a specified currency are permitted and conformation of updated data is selectively deferred by use of a control procedure implemented at each node (10, 12, 14) and utilizing a status and control table (in SAC 60, 62, 64), which describes that node's view of the status for shared data items at other nodes.
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Abstract: Dynamic replication of data under distributed system control to control the utilization of resources in a multiprocessing, distributed data base system avoiding a central node maintained control, or synchronization by immediately conforming all copies of an updated data file, is achieved by a distributed access control of peer elements by which, requests for access to data of a specified currency are permitted and conformation of updated data is selectively deferred by use of a control procedure implemented at each node (10, 12, 14) and utilizing a status and control table (in SAC 60, 62, 64) at each node which describes that node's view of the status for shared data items at other nodes. Access, including copying and deletion permission, is granted, when a search of the local table discloses no conflict. If conflict is disclosed, messages are exchanged with all involved nodes until the local table discloses no conflict.
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Citations
Patent
Method of maintaining a network of partially replicated database system
Peter S. Lim,Robert Broderson +1 more
- 19 Mar 1997
TL;DR: In this paper, the authors propose a method of maintaining a partially replicated database, which is a database having a central database and a plurality of individual partially replicated databases, and a set of visibility rules are applied to the data content of the entire logical docking unit.
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Local area network for digital data processing system
Bruce Mann,Darrell Duffy,Anthony Lauck,William Strecker +3 more
- 24 May 1985
TL;DR: In this article, a local area network for interconnecting terminals and other users and data processing systems and other service providers over a communications link is described. But the authors focus on the use of a service session between a user and a service provider.
221
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Distributed control of alias name usage in networks
Barry Alan Feigenbaum,Dennis Darrell Gibbs,Robert Sachsenmaier +2 more
- 23 Apr 1985
TL;DR: In this article, the authors propose a session-based name and session establishment process to avoid dependence on any "central" or "master" system, and to allow for extension of communications relating to these processes across devices linking portions of the network associated with different communication media or channels.
136
Patent
Multiprocessor system having global data replication
Carlo Bagnoli,Angelo Casamatta,Angelo Lazzari +2 more
- 04 Nov 1989
TL;DR: In this article, the authors propose a global write procedure for multiprocessor systems with global data replicated in all local memories, each local memory related to one of the system central processing units (CPUs).
73
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Message transmission control arrangement for node in local area network
Bruce Mann,Darrell Duffy,Anthony Lauck,William Strecker +3 more
- 25 Sep 1989
TL;DR: In this article, a local area network for interconnecting terminals and other users and data processing systems and other service providers over a communications link is described. But the authors focus on the use of a service session between a user and a service provider.
46
References
Patent
Data sharing computer network
Luther Harold Haibt,Alvin Paul Mullery +1 more
- 30 Jun 1975
TL;DR: In this article, a data communication network has a plurality of nodes interconnected with a communication link, wherein each node shares given ones of its data sets in common with other nodes in the network, and each node is operative to update any shared data set, except if one of the other nodes is also seeking to update the same data set.
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Queueing Analysis of Global Locking Synchronization Schemes for Multicopy Databases
TL;DR: Three analytic queueing models for the Network Semaphore scheme, Hopping Permit scheme, and Adaptive Hopping permit scheme are developed, whichorporating special waiting stages allows the latter two control schemes to be modeled as M/G/1 queueing systems.
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