N-way Local SemiJoin : A Filtering Technique for N-Way Joins in Wireless Sensors Networks
Djail boubekeur, Hidouci Walid-Khaled, Loudini Malik
Journal of Electronic Systems, Vol. 6, No. 1, 2016.
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Abstract:
In wireless sensor networks, the database consists of data collected by the different network nodes. This
database can be accessed by relational queries, such as: selections, projections and joins. Joins are queries that use a lot of
energy, which is a determining factor for network lifetime. In this paper, a new technique for n-way join queries is suggested,
using an in-network processing and adopting the filtering approach. Simulation results showed very good performances of
the proposed technique compared with a central processing of those queries at the sink.