Efficient Concurrency Control Method for Firm Real-time Transactions
نویسندگان
چکیده
منابع مشابه
Hybrid Concurrency Control Method in Firm Real-Time Databases
Real-time database system must meet time constraints in addition to the integrity constraints. Concurrency control is one of the main issues in the studies of real-time database systems. Traditional concurrency control methods use serializability as the correctness criterion when transactions are executed concurrently. However, strict serializability as the correctness criterion is not always s...
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ÐMany recent studies [8], [10] have suggested that the optimistic concurrency control (OCC) protocols outperform the locking-based protocols in real-time database systems (RTDBS). However, the OCC protocols suffer from the problem of unnecessary transaction restarts that is detrimental to transactions meeting their deadlines. The problem is more intensified in mixed transaction environments whe...
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In a real-time database system, it is difficult to meet all timing constraints due to the consistency requirements of the underlying database. However, when the transactions in the system are heterogeneous, they are not of the same importance some are of greater importance than others. In this paper, we propose a new optimistic concurrency control protocol called OCC-PDATI which uses informatio...
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Although real-time transaction concurrency control has been extensively studied, the design and evaluation of real-time in&l: concurrency control algorithms has not yet been considered. In this paper, we develop real-time variants of several classical B-tree concurrency control algorithms and compare their performance using a detailed simulation model of a firm-deadline real-time database syste...
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ژورنال
عنوان ژورنال: The Journal of the Korea Contents Association
سال: 2010
ISSN: 1598-4877
DOI: 10.5392/jkca.2010.10.7.115