Efficient Query Subscription Processing in a Multicast Environment
Ángel García-Crespo, Orkut Buyukkokten, Héctor García-Molina · 2005
This paper examines query subscription merging in a distributed environment where multicast channels are used to deliver information. It describes methods for reducing the cost of delivering information by merging overlapping data in the query answers and by using the multicast channels effectively. 1 Introduction Ongoing advances in communications, including the proliferation of the Internet and intranets, the development of mobile and wireless networks, and the impending availability of high bandwidth links to the home, have fueled the development of a wide range of new information-centered applications. Many of these new applications involve data dissemination, that is, the delivery of data from a set of producers to a (typically) larger set of consumers. Examples of dissemination-based applications include information feeds (e.g., stock and sports tickers of news wires), traffic information systems, electronic newsletters, and entertainment delivery [FZ96]. Current subscription se...