Object-oriented Real-time Database Design based on Description Logics

2013 ◽  
Keyword(s):  
Real Time ◽  
Description Logics ◽  
Object Oriented ◽  
Database Design ◽  
Real Time Database

Applications of Distributed Parallel Real Time Database on Power Grid

2013 ◽  
Vol 816-817 ◽  
pp. 488-492
Author(s):  
Li Xin Li ◽  
Wei Zhou ◽  
Qi Qiang Sun ◽  
Jiao Dai ◽  
Ji Zhong Han ◽  
...  
Keyword(s):  
Data Management ◽  
Real Time ◽  
Management System ◽  
Power Grid ◽  
Database Design ◽  
Experimental Results ◽  
Data Management System ◽  
Meta Data ◽  
The Real ◽  
Real Time Database

In order to make the real time database more suitable for the computing features, this article points to the distributed and parallel real time database design and architecture. First, a mapping table from table file to machine nodes is established, and then can use meta-data management system to store and manage the mapping table to meet the characteristics of high concurrent access. The whole network computation can access the unified interface provided by the real-time database, retrive data from each node, then collect the data. Experimental results show that this study and the systems designed can meet the computing requirements of a unified whole network.

Research on the Concurrency Control Communications Protocol in BioMedical Information Service System

2011 ◽  
Vol 340 ◽  
pp. 192-196
Author(s):  
Xiao Xin Du ◽  
Bo Wang ◽  
Jing Zhi Tian
Keyword(s):  
Real Time ◽  
Concurrency Control ◽  
Service System ◽  
Information Service ◽  
Object Oriented ◽  
Transaction Model ◽  
Real Time Database ◽  
Communications Protocol ◽  
Two Stages ◽  
Object Oriented Database

In allusion to the transaction trait of the object-oriented mobile real-time database in the biomedical information service system, the new concurrency control communications protocol (PAI-OM-2PL) is put up with the fusion of common object two stages lock protocol (2PL) and concurrency control communications protocol (PAI-2PL) of traditional mobile real-time nested transaction. The aim of proposing this new communications protocol in the biomedical information service system is to give full play to transaction semanteme, can earlier release lock with using open nested transaction model. The performance of PAI-OM-2PL was tested on the object-oriented database (db4o) in the biomedical information service system, at the same time we simulate mobile computing setting. The result is that the performance is enhanced by using the new communications protocol in some surroundings.

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