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註釋Abstract: "In this paper we present EVROM, a modelling technique for evolving application domains. First a delimitation of the concept of evolution is provided, based on an earlier developed general theory for such evolutions. This theory makes a distinction between the underlying information structure and its evolution on the one hand, and the description and semantics of operations on the information structure and its population on the other hand. Main issues within this theory are object typing, type relatedness and identification of objects. EVROM is the result of applying this general theory to the object role modelling technique PSM, a generalisation of ER, EER, FORM and NIAM."