PERSEND : Enabling Continuous Queries in Proximate Environments

In the mobile computing area, short-range wireless communication technologies enable to envision direct interactions between mobile devices.Thus, each device can be provided with a remote access to data its neighbours agree to share. Such a service enables applications to consult a set of data providers which dynamically evolves according to the mobility of the neighbouring devices. The set of data sources an application may access by this way is therefore representative of its physical neighbourhood. For this purpose, we propose to design a tool enabling the continuous consultation of neighbouring shared data. We present, in this paper, the PERSEND system we develop in this scope. Based on relational databases systems, PERSEND enables applications to define continuous queries over neighbouring data