New technology is always evolving and companies must have appropriate security for their business to be able to keep up-to-date with the changes. With the rapid growth in internet and www facilities, database security will always be a key topic in business and in the public sector and has implications for the whole of society. This volume covers issues related to security and privacy of information in a wide range of applications, including electronic commerce, informational assurances, workflow, privacy, policy modelling, mediation, information warfare defence, multilevel security, role-based access controls, mobile databases, inference, data warehouses and data mining.