Advances in Conceptual Modeling - Challenging Perspectives: by Stefan Jablonski, Roland Kaschek, Bernhard Thalheim (auth.),

By Stefan Jablonski, Roland Kaschek, Bernhard Thalheim (auth.), Carlos Alberto Heuser, Günther Pernul (eds.)

This ebook constitutes the refereed joint complaints of 8 foreign workshops held at the side of the twenty eighth overseas convention on Conceptual Modeling, ER 2009, in Gramado, Brazil, in November 2009.

The 33 revised complete papers provided have been rigorously reviewed and chosen from a hundred submissions. issues addressed by means of the workshops are lively conceptual modeling of studying (ACM-L), conceptual modeling within the huge (CoMoL), evolving theories of conceptual modeling (ETheCoM), workshop on foundations and practices of UML (FP-UML), joint foreign workshop on metamodels, ontologies, semantic applied sciences, and data platforms for the semantic internet (MOST-ONISW), caliber of data platforms (QoIS), standards, Intentions and ambitions in conceptual modeling ( RIGiM) and semantic and conceptual concerns in geographic info platforms (SeCoGIS).

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Additional resources for Advances in Conceptual Modeling - Challenging Perspectives: ER 2009 Workshops CoMoL, ETheCoM, FP-UML, MOST-ONISW, QoIS, RIGiM, SeCoGIS, Gramado, Brazil, November 9-12, 2009. Proceedings

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The join of the schemata S1 and S2 along the input- and output-views shown in Figure 2 is the schema S shown in the same figure. We omitted all attributes, as these are preserved by the join. A variant of the join operator is provided by means of a reference-join. The prerequisites are the same as for the join operator. In this case, however, the output-views Oi (i = 1, 2) of the original schemata are preserved within the resulting schema S = S1 I1 →O2 I2 →O1 S2 16 H. Ma, R. -D. Schewe Fig. 2. The join operator on two schemat Fig.

Derivation rules, invariants and pre- and postconditions (and cardinality constraints). On the other hand, we now take into account (in |assoc(e)|) the associations of each entity type e with the event types of the behavioural schema. *” in its relationships with Industry and Employee. 2 The Weighted Simple Method This is a variation to the simple method that assigns a strength to each kind of component of knowledge in the equation, such that the higher the strength, On Computing the Importance of Entity Types 27 the greater the importance of such component [3].

In the bulk or nesting construction we discussed above. – Similarly, any of (S ) denotes one arbitrary element schema, and n of (S ) denotes an arbitrary selection of n of the element schemata. – The selection of subschemata in the collection using any of the constructors all of , any of or n of can be refined by adding selection criteria in form of a where-clause. For instance, n of ({S1 , . . , Sk }) where ϕ would select n of the element schemata among those satisfying the condition ϕ. – n th(S ) for a list or tree schema denotes the n’th element schema, provided 1 ≤ n ≤ k is satisfied.

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