Temporal Object Role Modelling
نویسندگان
چکیده
We present a temporal object model capable of representing object lifespans and also the history of their roles and associations. We adopt an approach of temporal generalisation rather than temporal extension in which a model in its entirety is given a temporal semantics through an orthogonal generalisation of all model concepts { including the lifespan of object roles themselves and constraints over these roles. The model is based on the generic object data model OM and its algebra has been generalised into a full temporal algebra over object roles.
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