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Published Articles >> Table of Contents >> Abstract
Fourth International Workshop on Real-Time Computing Systems and Applications (RTCSA'97)
p. 96
Concurrency control for real-time database systems with mixed transactions
Kam-Yiu Lam, Dept. of Comput. Sci., City Univ. of Hong Kong, Kowloon, Hong Kong
Tei-Wei Kuo, Dept. of Comput. Sci., City Univ. of Hong Kong, Kowloon, Hong Kong
Wai-Hung Tsang, Dept. of Comput. Sci., City Univ. of Hong Kong, Kowloon, Hong Kong
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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/RTCSA.1997.629179
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This paper proposes a real-time concurrency control protocol called Reduced Ceiling Protocol (RCP) for database systems consisting of hard and soft real-time transactions. In the RCP, the schedulability of hard real-time transactions is guaranteed by reserving the data items for them and by eliminating the blocking time from soft real-time transactions. Different concurrency control strategies are used to resolve the data conflicts between different combinations of hard and soft real-time transactions. We have shown the characteristics of the schedules generated from the RCP. Simulation experiments have been performed to study the performance of the RCP as compared with the optimistic concurrency control with broadcast commit (OCC-BC). It has been found that the RCP can guarantee the performance of the hard real-time transactions and at the same time reduce the number of deadline missing of the soft real-time transactions.
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 Additional Information
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Index Terms- concurrency control; concurrency control; real-time database systems; mixed transactions; schedulability; data conflicts; optimistic concurrency control with broadcast commit; OCC-BC; hard real-time transactions
Citation:
Kam-Yiu Lam, Tei-Wei Kuo, Wai-Hung Tsang,
"Concurrency control for real-time database systems with mixed transactions,"
rtcsa,
p. 96,
Fourth International Workshop on Real-Time Computing Systems and Applications (RTCSA'97),
1997
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