A data base system that supports natural language queries is not really natural if it requires the user to know how the data are represented. This paper defines a formalism, called conceptual graphs, that can describe data according to the userÃÂ¢ÃÂÃÂs view and ac- cess data according to thseystemÃÂ¢ÃÂÃÂs view. In addition, the graphs can representfunctional dependencies in the data base and suppoirnt- ferences and computations that are not explicit in the initial query.
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