9783540007050 | Springer Verlag, October 1, 2003, cover price $159.00 | About this edition: In this era of heterogeneous and distributed data sources, ranging from semistructured documents to knowledge about coordination processes or workflows, logic provides a rich set of tools and techniques with which to address the questions of how to represent, query and reason about complex data.

9783642622489 | Reprint edition (Springer-Verlag New York Inc, October 1, 2012), cover price $139.00 | About this edition: In this era of heterogeneous and distributed data sources, ranging from semistructured documents to knowledge about coordination processes or workflows, logic provides a rich set of tools and techniques with which to address the questions of how to represent, query and reason about complex data.

9783642206733 | Springer-Verlag New York Inc, June 28, 2011, cover price $89.99