Privacy-Preserving Query based on Virtual Organization in Grid Database

As the development of the grid technology, it becomes more and more important in commerce application to preserve privacy and prevent information from being leaked when querying in a dynamic and heterogeneous grid database. This paper proposes a privacy-preserving query middleware PVOM (privacy-preserving visual organizations mediator) based on the security requirement of heterogeneous grid nodes, and present query algorithm based on privacy-preserving rule processed by PVOM, which can effectively preserve private information via detecting query and improve security in commercial environment application.