Processing ad-hoc joins on mobile devices

Mobile devices are capable of retrieving and processing data from remote databases. In a wireless data transmission environment, users are typically charged by the size of transferred data, rather than the amount of time they stay connected. We propose algorithms that join information from non-collaborative remote databases on mobile devices. Our methods minimize the data transferred during the join process, by also considering the limitations of mobile devices. Experimental results show that our approach can perform join processing on mobile devices effectively.