Titlebook: Conceptual Modeling of Information Systems; Antoni Olivé Textbook 2007 Springer-Verlag Berlin Heidelberg 2007 Conceptual Modeling.Domain E

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t committee who in 1962 presented the “Information Al- bra”. At about the same time B?rje Langefors published his elementary message and e-file approach to specification of information systems. The next decade,978-3-642-07256-7978-3-540-39390-0

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https://doi.org/10.1007/978-3-642-82580-4r associated state transition diagrams. We then explain, in Sect. 13.2, how entities can be modeled as state machines, and that in this case state transition diagrams are part of the behavioral schema. Sections 13.3 to 13.5 describe how state transition diagrams can be defined in UML.

Panther

https://doi.org/10.1007/978-1-4757-4425-5 cases define the functionality provided by an information system. The use cases of an information system are determined during requirements elicitation, one of the most important phases of requirements engineering.

Panther

白楊魚

AXIS

Reification,cation can easily be defined in UML, as we show in Sect. 6.2. In some languages, however, reification cannot be defined as easily, so one must instead use implicit reification, which is also described in Sect. 6.2. Implicit reification is an interesting schema transformation that can be used in other contexts.

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