Аннотация
Roles are meant to capture dynamic and temporal aspects of real-
world objects. The role concept has been used with many semantic meanings:
dynamic class, aspect, perspective, interface or mode. This paper identifies
common semantics of different role models found in the literature. Moreover, it
presents a conceptual modelling pattern for the role concept that includes both
the static and dynamic aspects of roles. A conceptual modelling pattern is
aimed at representing a specific structure of knowledge that appears in different
domains. In particular, we adapt the pattern to UML. The use of this pattern
eases the definition of roles in conceptual schemas. In addition, we describe the
design of schemas defined using our pattern in order to implement them in any
object-oriented language. We also discuss the advantages of our approach over
previous ones.
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