Abstract
Effective use of heterogeneous, distributed information in a coherent, integrated fashion has long been a 'holy grail'. The UK Health and Social care domain is an example where a global view is needed to facilitate decision making, whilst having ethical and legal concerns. The IBHIS project aims to provide an integrated broker that enables coherent use of a set of distributed, heterogeneous data sources, whilst ensuring trustworthiness and audit. This paper presents a service-oriented federated architecture for the IBHIS broker.