Query Processing and Query Data Aggregation for Continuous Queries

Publication Date : 14/04/2016

Author(s) :

Bhawna Shivhare , Reemi Shirsath , Prachi Chaudhari , Pooja Kadam .

Volume/Issue :
Volume 2
Issue 4
(04 - 2016)

Abstract :

The transformation of passive web pages into active environment through the continuous queries by providing the queries which have time varying dynamic query result useful for making online decision. Different users having diverse interest desire to obtain the value of some aggregation function over distributed data item, for example, to find the value of portfolio for The client. In these The client specifies a coherency requirement as part of query and for these queries low cost and scalable technique network of data aggregators. The entire node cannot individually determine by itself its inclusion in the query result for these different algorithmic challenges are presented like aggregators and selection queries. Each data item serve for set of data aggregators. Disseminating a client query into sub queries and then executing this sub queries on chosen data aggregator are involved in this technique. A query cost model, we build which can be used to estimate the number of refresh message which is required to satisfy client specified incoherence bound

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