An evaluation of approaches to federated query processing over linked data
Peter N. Haase, Tobias Mathäß, Michael J. Ziller · 2010
The Web has evolved from a global information space of linked documents to a web of linked data. The Web of Data enables answering complex, structured queries that could not be answered by a single data source alone. While the current procedure to work with multiple, distributed linked data sources is to load the desired data into a single RDF store and process queries in a centralized way against the merged data set, such an approach may not always be practically feasible or desired.