Volume 19, Issue 1, November 2015, Pages 190–200
Elyes KOOLI1 and Nacéra Madani Aissaoui2
1 The High Institute of Technological Studies of Ksar-Hellal, Avenue Hadj Ali Soua, 5070, Tunisia
2 Faculty of Sciences Monastir (FSM), Tunisia
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Real-Time Database Systems (RTDBSs) are designed to manage the majority of current applications which manipulate a large volume of data and have a great need of real-time computation. One of the main issues in the DBMSs is to control the access to the same data items by the transactions in incompatible mode. In RTDBSs, this problem becomes more complicated since the transaction manager must not only avoid data access conflicts, but it has also to provide mechanisms that help transactions to meet their deadlines, to maximize the transactions success ratio. In this paper, we describe The SCC protocol (Speculative Concurrency Control) which is one of the first concurrency control protocol RTDBS. It is based on the transactions duplicating transactions. However, the SCC raises some problems; we propose a new extension of this protocol to solve these problems and to increase the number of transactions meeting their deadline.
Author Keywords: RTDBS, priority assignment, speculative concurrency control, predictive.
Elyes KOOLI1 and Nacéra Madani Aissaoui2
1 The High Institute of Technological Studies of Ksar-Hellal, Avenue Hadj Ali Soua, 5070, Tunisia
2 Faculty of Sciences Monastir (FSM), Tunisia
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Real-Time Database Systems (RTDBSs) are designed to manage the majority of current applications which manipulate a large volume of data and have a great need of real-time computation. One of the main issues in the DBMSs is to control the access to the same data items by the transactions in incompatible mode. In RTDBSs, this problem becomes more complicated since the transaction manager must not only avoid data access conflicts, but it has also to provide mechanisms that help transactions to meet their deadlines, to maximize the transactions success ratio. In this paper, we describe The SCC protocol (Speculative Concurrency Control) which is one of the first concurrency control protocol RTDBS. It is based on the transactions duplicating transactions. However, the SCC raises some problems; we propose a new extension of this protocol to solve these problems and to increase the number of transactions meeting their deadline.
Author Keywords: RTDBS, priority assignment, speculative concurrency control, predictive.
How to Cite this Article
Elyes KOOLI and Nacéra Madani Aissaoui, “Predictive speculative concurrency control for Real-Time Database Systems,” International Journal of Innovation and Scientific Research, vol. 19, no. 1, pp. 190–200, November 2015.
