Editorial

摘要

We continue our practice of having survey papers in each issue of IJWIS, which proved to be very successful in consolidating the understanding of the dynamic and evolving research area of web information systems. The survey paper in this issue by Hannes Miihleisen, Tilman Walther and Robert Tolksdorf (Germany) focuses on semantic web, particularly the issues of storage. Semantic web has gained its popularity among web engineers and researchers, and distributed storage of semantic information plays an important role. This survey paper discusses thoroughly issues about distributed storage, including data format and format specific issues, as well as cluster storage, and self-organized storage.