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A publicação pode ser exportada nos seguintes formatos: referência da APA (American Psychological Association), referência do IEEE (Institute of Electrical and Electronics Engineers), BibTeX e RIS.

Exportar Referência (APA) 
Ramos, P. N. (2008). Contrary-to-duties constraints: from UML to relational model. In  Czarnecki K., Ober I., Bruel JM., Uhl A., Völter M. (Ed.), 11th International Conference on Model Driven Engineering Languages and Systems, MoDELS 2008. (pp. 460-474). Toulouse: Springer.
Exportar Referência (IEEE) 
P. D. Ramos,  "Contrary-to-duties constraints: from UML to relational model", in 11th Int. Conf. on Model Driven Engineering Languages and Systems, MoDELS 2008,  Czarnecki K., Ober I., Bruel JM., Uhl A., Völter M., Ed., Toulouse, Springer, 2008, vol. 5301, pp. 460-474
Exportar BibTeX 
@inproceedings{ramos2008_1780773045823,
	author = "Ramos, P. N.",
	title = "Contrary-to-duties constraints: from UML to relational model",
	booktitle = "11th International Conference on Model Driven Engineering Languages and Systems, MoDELS 2008",
	year = "2008",
	editor = " Czarnecki K., Ober I., Bruel JM., Uhl A., Völter M.",
	volume = "5301",
	number = "",
	series = "",
	doi = "10.1007/978-3-540-87875-9_33",
	pages = "460-474",
	publisher = "Springer",
	address = "Toulouse",
	organization = "",
	url = "https://link.springer.com/chapter/10.1007%2F978-3-540-87875-9_33"
}
Exportar RIS 
TY  - CPAPER
TI  - Contrary-to-duties constraints: from UML to relational model
T2  - 11th International Conference on Model Driven Engineering Languages and Systems, MoDELS 2008
VL  - 5301
AU  - Ramos, P. N.
PY  - 2008
SP  - 460-474
DO  - 10.1007/978-3-540-87875-9_33
CY  - Toulouse
UR  - https://link.springer.com/chapter/10.1007%2F978-3-540-87875-9_33
AB  - Sometimes, because of an atypical Situation, ail important mandatory association between classes in a UML Class Diagram Must be replaced by all optional one. That semantic and functional impoverishment happens because the mandatory constraint must have a boolean value. In this paper we analyze the use Of soft constraints in the UML Class Diagram, and their automatic repercussion in the corresponding Relational Model. The soft (deontic) constraints allow the formal representation of requirements, which ideally should always be fulfilled, but can be violated in atypical situations. In this paper we enrich a previous deontic approach, by introducing the ability to explicitly represent the so called Contrary-To-Duties requirements, i.e.. domain integrity requirements that emerge as a consequence of an unfulfilled mandatory constraint. We Support our approach with the UML/OCL language.
ER  -