Parallel and Distributed Information Systems brings together in one place important contributions and up-to-date research results in this fast moving area. Parallel and Distributed Information Systems serves as an excellent reference, providing insight into some of the most challenging research issues in the field.Parallel and Distributed Information Systems brings together in one place important contributions and up-to-date research results in this fast moving area. Parallel and Distributed Information Systems serves as an excellent reference, providing insight into some of the most challenging research issues in the field.Guest Editors' Introduction; J.F. Naughton, G. Weikum. Consistency Algorithms for Multi-Source Warehouse View Maintenance; Yue Zhuge, et al. Distributed Multi-Level Recovery in Main-Memory Databases; R. Tastogi, et al. Capabilities-Based Query Rewriting in Mediator Systems; Y. Papakonstantinou, et al.