Dr. Hongbin Dai Profile

Dr. Hongbin Dai

at Nanjing SAC Rail-Transit Engineering Co Ltd

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Proceedings Article | 19 July 2013 Paper

A storage scheme for the real-time database supporting the on-line commitment

Hong-bin Dai, Yu-jian Jing, Hui Wang

Proceedings Volume 8878, 88784R (2013) https://doi.org/10.1117/12.2030916

KEYWORDS: Databases, Data storage, Control systems, Data acquisition, Cobalt, Roads, Computer science, Automatic control, Process control, Mining

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The modern SCADA (Supervisory Control and Data acquisition) systems have been applied to various aspects of everyday life. As the time goes on, the requirements of the applications of the systems vary. Thus the data structure of the real-time database, which is the core of a SCADA system, often needs modification. As a result, the commitment consisting of a sequence of configuration operations modifying the data structure of the real-time database is performed from time to time. Though it is simple to perform the off-line commitment by first stopping and then restarting the system, during which all the data in the real-time database are reconstructed. It is much more preferred or in some cases even necessary to perform the on-line commitment, during which the real-time database can still provide real-time service and the system continues working normally. In this paper, a storage scheme of the data in the real-time database is proposed. It helps the real-time database support its on-line commitment, during which real-time service is still available.

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