By Stefan Jablonski, Roland Kaschek, Bernhard Thalheim (auth.), Carlos Alberto Heuser, Günther Pernul (eds.)
This e-book constitutes the refereed joint complaints of 8 overseas workshops held along with the twenty eighth foreign convention on Conceptual Modeling, ER 2009, in Gramado, Brazil, in November 2009.
The 33 revised complete papers offered have been conscientiously reviewed and chosen from a hundred submissions. subject matters addressed via 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 knowledge platforms for the semantic net (MOST-ONISW), caliber of data platforms (QoIS), requisites, Intentions and targets in conceptual modeling ( RIGiM) and semantic and conceptual concerns in geographic info structures (SeCoGIS).
Read or Download 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 PDF
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Additional info 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
Each existential quantiﬁed role are made dependent from the list of universal quantiﬁed roles appearing before it in L4 . Labels are syntactic artifacts of our system, which means that labeled concepts and its equivalent ALC have the same semantics. L2 L1 Consider L1 αL2 ; the notation L1 α L2 denotes the exchanging of the universal roles occurring in L1 for the existential roles occurring in L2 in a consistent way such that the skolemization is dually placed. This is used to express the negation Q R of labeled concepts.
This requires that entity-types in the input-views be turned into relationship types. The schema shown in Figure 3 shows the result of the reference-join of the schemata S1 and S2 from Figure 2. Another variant can be obtained, when cooperating views  are employed instead of merging input- and output-views or letting the former ones reference the latter ones. In this case the data exchange has to be speciﬁed explicitly. We omit the details. Dual to the sum constructor we can deﬁne a product constructor.
Rk → Rk }. ,Rk →Rk (S). e. disjoint union constructor. More generally, we consider joins of two schema along input- and output-views . For this let Si be a schema with two views Ii called input view, and Oi called output-view (i = 1, 2). We request that Ii and Oj for i = 1, j = 2 or i = 2, j = 1 are isomorphic. The join schema S = S1 I1 :=O2 I2 :=O1 S2 results from the two given schemata by identifying in S1 ∪ S2 the input-view of ﬁrst schema with the output-view of the second one and vice versa.
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 by Stefan Jablonski, Roland Kaschek, Bernhard Thalheim (auth.), Carlos Alberto Heuser, Günther Pernul (eds.)