The traditional heuristic algorithm of pushing selection predicates below joins is possibly less efficient for continuous queries,because early selection destroys the ability to share subsequent high cost join processing.

A novel data streams partitioning method is proposed to resolve problems of range-aggregation continuous queries over parallel streams for power industry.

Sensor network in a lot of applications have proposed many new challenge to traditional real-time such as the heterogeneity of the underlying data source or I/O devices,real-time of processing continuous queries and adaptively quality of service etc.

Load shedding for continuous query on different important input streams;

Design and Implementation of Continuous Query Processing Prototype System over Data Streams;

Multiple continuous query optimization over data stream

Based on the theory of moving objects spatio-temporal continuity, we propose an improved method(TP NN Queries) that searches the TPR-TREE once to get the curve of distance changes between the que.

The storage is reduced and the performance of spatial-temporal query is improved.

It is essential for the engineers to acquire construction data in time and do spatial-temporal query by doing the data model resea.

Spatio-temporal Query Language Based on Spatio-temporal Reasoning and XML;

Therefore,energy-efficient spatio-temporal query processing algorithm is a very important research problem in the data management of wireless sensor networks.