DObjects

Abstract

Many contemporary applications rely heavily on large scale distributed and heterogeneous data sources. The key constraints for building a distributed data query infrastructure for such applications are: scalability, consistency, heterogeneity, and network and resource dynamics. We designed and developed DObjects, a general-purpose query and data operations infrastructure that can be integrated with metacomputing middleware. This demo proposal describes the architecture and the dynamic query processing functionalities of our data services and shows how they are integrated with a metacomputing framework offering users an open platform for building distributed applications that require access to data integrated from multiple data sources.