Object-relational implementation of evidential databases

Due to the exploding number of information stored and shared over Internet, and the introduction of new technologies to capture and transit data, managing imperfect data is an important issue in many applications. An important tool for reasoning with imperfect data is the evidence theory, which is a generalization of the Bayesian inference. We call databases whose data imperfection are processed thanks to the evidence theory, the evidential databases. In this paper, we design the evidential database meta-model using an Oriented-Object modelling language (UML) and we implement it using an Object-Relational database. Although the implementation is not native, it showed an acceptable scalability.