This book constitutes the thoroughly refereed post-proceedings of the First International Confernece on Semantics of a Networked World: Semantics for Grid Databases, ICSNW 2004, held in Paris, France in June 2004.

The 16 revised full papers presented togehter with 2 invited papers and 7 posters were carefully reviewed and selected from close to 50 submissions. The papers are organized in topical sections on semantic data integration, peer-to-peer systems, semantics for scientific applications, interoperability and mediation, and global services and schemas.