The Query Planning for Continuous Aggregation and Queries Using Data Aggregators

Provided by: International Journal of Emerging Trends in Science and Technology
Topic: Big Data
Format: PDF
Continuous aggregation queries are used to monitor the changes in data with time varying for online decision making. For continuous queries low cost and scalable techniques used a network of aggregators. Individual node cannot by itself determine its inclusion in the query result for these different algorithmic challenges from aggregate and selection queries are presented. At specific coherencies each data item can serve for a set of data aggregators. Technique involves disseminating query into sub query and sub queries are executed on the chosen data aggregators.

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