ADAPTIVE SHARING METHOD FOR MULTIPLE CONTINUOUS QUERY
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2013, Vol 2, Issue 3
Abstract
As the data management field has diversified to consider settings in which queries are increasingly complex, statistics are less available, or data is stored remotely, there has been an acknowledgment that the traditional optimize-then-execute paradigm is insufficient. The main objective of our project is to develop and produce an optimized global execution plan for the collective evaluation of a static set of multi-way continuous queries. Generally in a data stream environment, a considerable number of continuous queries are registrated in advance and should be processed continuously. For that there is a need of multiple query optimizations. For this purpose, this paper proposes a new method called A-SEGO that optimizes a set of multi-way join queries collectively by tracing a set of promising subplans. The proposed approach uses a cost profile that maintains statistical synopses of the cost of join operations in past global execution plans. Based on these cost statistics and on a user-defined cost-bound parameter, a set of promising subplans is determined to trace them concurrently. This paper focuses on producing an optimized global execution plan for the collective evaluation of a static set of multi-way continuous queries. In real data stream applications, a set of continuous queries registered in a DSMS can be changed as time goes. Therefore, it is necessary to devise an incremental optimization mechanism. With this approach, the system needs to store existing query computations, identify the common computations between the new query and the existing query plan, choose optimally among multiple sharing paths, and add unsharable new computations to the plan[4].
Authors and Affiliations
Mariat Thomas , Mr. G. Naveen Sundar
Keywords
Related Articles
- EP ID EP151724
- DOI -
- Views 97
- Downloads 0
A REVIEW ON HAND GETSURE RECOGNITION SYSTEMS
Gesture recognition is a topic in computer science and language technology with the goal of interpreting human gestures via mathematical algorithms. Gestures can originate from any bodily motion or state but commonly...
Design of Multilayer High Impedance Surface for Antenna Applications
In the recent years High Impedance structures are drawing lot of interest in electromagnetic and antenna community. Due to compact sizes of electronic devices, required radiating element to be placed closed vicinity...
SECURE DATA DELIVERY USING GEOGRAPHIC MULTICAST ROUTING
In MANET group communication is an important characteristic which can be implemented through Multicasting. MANET has a dynamic topology through which the mobile nodes keep changing their location and thus it doesn’t have...
Security and QOS centric protocols for P2P networks: current state of the art
Peer-to-peer (p2p) networking technologies have gained popularity as a mechanism for users to share files without the need for centralized servers. A p2p network provides a scalable and fault-tolerant mechanism to locate...
An Efficient Geometric feature based License Plate Localization and Stop Line Violation Detection System
Stop line violation causes in myanmar when the back wheel of the car either passed over or reach at the stop line when the red light changes. the objective of this work is to design and implement algorithms for sto...