As network society grows rapidly and globally, information sources, such as digital libraries(DL) , databases, have been built over Internet These sources are becoming digital assets containing a huge volume of multimedia contents. In this paper, we propose PVL, a private virtual library, in which a user can use information of heterogeneous data type from these sources as well as real-time data obtained from cameras and VOD servers in the advanced information networks. Our main theme is to realize a flexible virtual library that enables users to customize the system privately in a bottom-up fashion, in every aspect of intelligent information media PVL is realized with repositories composed of data warehouse and heterogeneous mirrors, and autonomous agents that work cooperatively. We describe fundamental constructs of PVL in the paper
