Data storage and access in wireless sensor networks(WSNs)

broadly referred as to data management

specifies how data is stored and how queries are disseminated to acquire the relevant data

which has become an import research issue of WSNs.From the perspective of data-centric network

this paper surveys the state of the art techniques of data storage and access in WSNs.First

the basic concepts of data storage and access in WSNs are introduced

then data storage strategies are summarized

and distributed data storage and information brokerage techniques are discussed in detail.Following that

query processing methods are presented

including query categorization

query processing models and optimization techniques.Finally

we conclude the paper and highlight the future development of storage and access techniques of WSNs.