Cours ocl object constraint language pdf

Extending ocl for olap querying on conceptual multidimensional models of data warehouses article in information sciences 1805. Object constraint language ocl pure expression language. Its also not a book on capability maturity models cmm, classresponsibilitiescollaborators crc cards, decision representation language drl, extreme programming xp, gantt charts, issuebased information systems ibis, joint appication design. Langage formel mais simple a utiliser avec une syntaxe, une grammaire.

The object constraint language ocl started as a complement of the uml notation with the goal to overcome the limitations of uml and in general, any graphical notation in terms of precisely specifying detailed aspects of a system design. The automated extraction of high resolution 3d building models from imagery and laser scanner data requires strong models for all features which are observable at a large scale. Magicdraw no magic, inc unified modeling language uml. Le delf livre b2 amp cd abebookscom reussir le delf livre b2 amp cd dalf ciep fsitutorialansyspdfsdocuments com pdf. The paper therefore puts forward a framework for modelling constraints comprising 1 a classification and clarification of constraints, 2 a formal description using the unified modelling languageobject constraint language umlocl and 3 implementation characteristics. Ocl object constraint language ocl is a formal language used to express constraints. Ocl object constraint language part of the uml standard. It consists of a modelchecking framework for the object constraint language ocl, which is a integral part of the uml standard.

Section 4 is about the adequate formal language for odp type descriptions. Uml unified modeling language is a standard language for specifying, visualizing, constructing, and documenting the artifacts of software systems. Cours omg unified modeling language specification cours. The object constraint language ocl is a specification language which. Memento du langage ocl object constraint language v1. An introduction to the object constraint language ocl pdf.

Ocl is typically used to specify invariant conditions that must hold for the system being modeled. Object constraint language ocl object constraint language. An ocl expression is valid if it is written according to the rules formal grammar of ocl. After obtaining a result, one can always apply another property to the result to get a new result value. Modelchecking is a highly automated formal method that has found. For instance, typecasting with oclastype to a type that the object does not support or getting the first element of an empty collection will result in undefined. A constraint is a valid ocl expression of type boolean. Therefore, each ocl expression can be read and evaluated lefttoright. The object constraint language ocl started as a complement of the uml notation with the goal to overcome the limitations of. Also,derived property specifications can be defined using ocl.

Developer studio 2006 delphi for microsoft win32 delphi for the microsoft. Scribd is the worlds largest social reading and publishing site. About the object constraint language specification version 2. Architecting software systems using model transformations. Ocl as specification language for object constraints. Fakultat informatik, institut smt, lehrstuhl softwaretechnologie. Modelbased assertion dldf fllwarmer and kleppe define a constraint as follows. Uml was created by the object management group omg and uml 1. Object constraint modelbased assertion dldf fllwarmer and kleppe define a constraint as follows. Every ocl expression indicates a value or object within the system. Properties can be combined to make more complicated expressi ons.

Pdf object constraint language ocl famma faissal and. By using ocl, constraints and queries can be speci ed in a formal yet. This specification represents the convergence of best practices in the objecttechnology. Object constraint language omg05eocl is a typed formal language in. Understanding ocl with reference to sql part 1 youtube. Examens corriges object constraint language ocl une. This is not a book on unified modeling language uml. This paper presents our view on modelling constraints, in which we distinguish three different stages. Cest avec ocl object constraint language quuml formalise lexpression des contraintes. Practicing systems engineers interested in system modeling. Founded in 1989, omg standards are driven by vendors, endusers, academic institutions and government agencies. The object constraint language ocl started as a com plement of the uml notation with the goal to overcome the limitations of. A constraint is a restriction on one or more values a constraint is a restriction on one or more values of part of an objectoriented model or system. Atlas transformation language atl user manual version 0.