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Are Fuzzy Logics and Dempster-shafer-theory Sufficient for Modelling Indeterminateness?

Introducing features of natural language into query languages for databases increases their power and ergo-nomics. Therefore, theories are needed which formalise these features of natural language. Focusing on inde-terminateness we discuss some existing theories, especially fuzzy logics and Dempster-Shafer-Theory, in order to develop a paradigm which allows for a direct comparison of diierent theories with respect to their formalisation of some central aspects of natural language .