[{"department":[{"_id":"66"}],"type":"conference","place":"Amsterdam, The Netherlands","date_created":"2019-03-04T11:52:20Z","abstract":[{"lang":"eng","text":"Currently existing graph grammar-based specification languages have serious problems with supporting any kind of “specification-in-the-large” activities. More precisely, they have deficiencies with respect to modeling hierarchical data structures or specifying meta activities like manipulation of graph schemata. Furthermore, already proposed graph grammar module concepts are still too abstract to be useful in practice. Our contribution addresses these problems by introducing a new hierarchical graph data model with an infinite number of schema, meta-schema, etc. layers. It forms the base for a forthcoming concrete modular graph grammar specification language where in addition information hiding aspects like explicit export and import interfaces are expressible."}],"citation":{"ieee":"G. Engels and A. Schürr, “Encapsulated Hierarchical Graphs, Graph Types, and Meta Types,” in <i>Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)</i>, 1995, pp. 101–109.","apa":"Engels, G., &#38; Schürr, A. (1995). Encapsulated Hierarchical Graphs, Graph Types, and Meta Types. In <i>Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)</i> (pp. 101–109). Amsterdam, The Netherlands: Elsevier. <a href=\"http://dx.doi.org/10.1016/S1571-0661(05)80186-0\">http://dx.doi.org/10.1016/S1571-0661(05)80186-0</a>","short":"G. Engels, A. Schürr, in: Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy), Elsevier, Amsterdam, The Netherlands, 1995, pp. 101–109.","chicago":"Engels, Gregor, and Andy Schürr. “Encapsulated Hierarchical Graphs, Graph Types, and Meta Types.” In <i>Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)</i>, 101–9. Electronic Notes in Theoretical Computer Science. Amsterdam, The Netherlands: Elsevier, 1995. <a href=\"http://dx.doi.org/10.1016/S1571-0661(05)80186-0\">http://dx.doi.org/10.1016/S1571-0661(05)80186-0</a>.","mla":"Engels, Gregor, and Andy Schürr. “Encapsulated Hierarchical Graphs, Graph Types, and Meta Types.” <i>Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)</i>, Elsevier, 1995, pp. 101–09, doi:<a href=\"http://dx.doi.org/10.1016/S1571-0661(05)80186-0\">http://dx.doi.org/10.1016/S1571-0661(05)80186-0</a>.","bibtex":"@inproceedings{Engels_Schürr_1995, place={Amsterdam, The Netherlands}, series={Electronic Notes in Theoretical Computer Science}, title={Encapsulated Hierarchical Graphs, Graph Types, and Meta Types}, DOI={<a href=\"http://dx.doi.org/10.1016/S1571-0661(05)80186-0\">http://dx.doi.org/10.1016/S1571-0661(05)80186-0</a>}, booktitle={Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)}, publisher={Elsevier}, author={Engels, Gregor and Schürr, Andy}, year={1995}, pages={101–109}, collection={Electronic Notes in Theoretical Computer Science} }","ama":"Engels G, Schürr A. Encapsulated Hierarchical Graphs, Graph Types, and Meta Types. In: <i>Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)</i>. Electronic Notes in Theoretical Computer Science. Amsterdam, The Netherlands: Elsevier; 1995:101-109. doi:<a href=\"http://dx.doi.org/10.1016/S1571-0661(05)80186-0\">http://dx.doi.org/10.1016/S1571-0661(05)80186-0</a>"},"publication":"Proceedings of the Joint COMPUGRAPH/SEMAGRAPH Workshop on Graph Rewriting and Computation (SEGRAGRA 1995), Volterra (Italy)","doi":"http://dx.doi.org/10.1016/S1571-0661(05)80186-0","user_id":"52534","_id":"8269","series_title":"Electronic Notes in Theoretical Computer Science","publisher":"Elsevier","language":[{"iso":"eng"}],"page":"101-109","date_updated":"2022-01-06T07:03:52Z","author":[{"last_name":"Engels","first_name":"Gregor","full_name":"Engels, Gregor","id":"107"},{"full_name":"Schürr, Andy","first_name":"Andy","last_name":"Schürr"}],"status":"public","title":"Encapsulated Hierarchical Graphs, Graph Types, and Meta Types","year":"1995"},{"date_created":"2019-02-19T19:19:14Z","type":"conference_editor","department":[{"_id":"66"}],"citation":{"mla":"Ehrich, Hans-Dietrich, et al., editors. <i>Fundamentals of Object-Oriented Languages, Systems, and Methods</i>. Vol. 95, Schloss Dagstuhl, Leibniz Center for Informatics, 1994.","bibtex":"@book{Ehrich_Engels_Paredaens_Wegner_1994, series={Dagstuhl-Seminar-Report}, title={Fundamentals of Object-Oriented Languages, Systems, and Methods}, volume={95}, publisher={Schloss Dagstuhl, Leibniz Center for Informatics}, year={1994}, collection={Dagstuhl-Seminar-Report} }","ama":"Ehrich H-D, Engels G, Paredaens J, Wegner J, eds. <i>Fundamentals of Object-Oriented Languages, Systems, and Methods</i>. Vol 95. Schloss Dagstuhl, Leibniz Center for Informatics; 1994.","ieee":"H.-D. Ehrich, G. Engels, J. Paredaens, and J. Wegner, Eds., <i>Fundamentals of Object-Oriented Languages, Systems, and Methods</i>, vol. 95. Schloss Dagstuhl, Leibniz Center for Informatics, 1994.","apa":"Ehrich, H.-D., Engels, G., Paredaens, J., &#38; Wegner, J. (Eds.). (1994). <i>Fundamentals of Object-Oriented Languages, Systems, and Methods</i> (Vol. 95). Schloss Dagstuhl, Leibniz Center for Informatics.","chicago":"Ehrich, Hans-Dietrich, Gregor Engels, J. Paredaens, and Jan Wegner, eds. <i>Fundamentals of Object-Oriented Languages, Systems, and Methods</i>. Vol. 95. Dagstuhl-Seminar-Report. Schloss Dagstuhl, Leibniz Center for Informatics, 1994.","short":"H.-D. Ehrich, G. Engels, J. Paredaens, J. Wegner, eds., Fundamentals of Object-Oriented Languages, Systems, and Methods, Schloss Dagstuhl, Leibniz Center for Informatics, 1994."},"abstract":[{"lang":"eng","text":"During the last decades there has been progress within the object-oriented community in agreeing on what object- orientedness means. The role of object identity, specialization, inheritance, and dynamic binding have been examined. However, a careful look at articles written by people with a theory, programming language, database, and software engineering background shows that the semantical understanding of the same features still differs considerably. A well-known example is the feature of inheritance, which has quite a different meaning for persons from the database comunity with a semantic data model background and persons form the programming language community with a compiling technique background This observation also applies to the literaute on object-oriented software development methods. Here, object -oriented analysis and design methods are often heavily influenced by semantic data modelling consepts- An implemantion of an object-orinted design by an objeckt-oriented progamming language usually causes more difficulties than expected although the \"same\" object-oriente paradigm is used..."}],"_id":"7797","publisher":"Schloss Dagstuhl, Leibniz Center for Informatics","language":[{"iso":"eng"}],"series_title":"Dagstuhl-Seminar-Report","user_id":"52534","volume":95,"editor":[{"first_name":"Hans-Dietrich","last_name":"Ehrich","full_name":"Ehrich, Hans-Dietrich"},{"full_name":"Engels, Gregor","first_name":"Gregor","last_name":"Engels","id":"107"},{"first_name":"J.","last_name":"Paredaens","full_name":"Paredaens, J."},{"full_name":"Wegner, Jan","last_name":"Wegner","first_name":"Jan"}],"year":"1994","title":"Fundamentals of Object-Oriented Languages, Systems, and Methods","status":"public","date_updated":"2022-01-06T07:03:46Z","intvolume":"        95"},{"citation":{"chicago":"Cuny, Janice, Hartmut Ehrig, Gregor Engels, and Grzegorz Rozenberg, eds. <i>Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers</i>. Vol. 1073. LNCS. Berlin/Heidelberg: Springer, 1994. <a href=\"http://dx.doi.org/10.1007/3-540-61228-9\">http://dx.doi.org/10.1007/3-540-61228-9</a>.","short":"J. Cuny, H. Ehrig, G. Engels, G. Rozenberg, eds., Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers, Springer, Berlin/Heidelberg, 1994.","ieee":"J. Cuny, H. Ehrig, G. Engels, and G. Rozenberg, Eds., <i>Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers</i>, vol. 1073. Berlin/Heidelberg: Springer, 1994.","apa":"Cuny, J., Ehrig, H., Engels, G., &#38; Rozenberg, G. (Eds.). (1994). <i>Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers</i> (Vol. 1073). Berlin/Heidelberg: Springer. <a href=\"http://dx.doi.org/10.1007/3-540-61228-9\">http://dx.doi.org/10.1007/3-540-61228-9</a>","bibtex":"@book{Cuny_Ehrig_Engels_Rozenberg_1994, place={Berlin/Heidelberg}, series={LNCS}, title={Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers}, volume={1073}, DOI={<a href=\"http://dx.doi.org/10.1007/3-540-61228-9\">http://dx.doi.org/10.1007/3-540-61228-9</a>}, publisher={Springer}, year={1994}, collection={LNCS} }","ama":"Cuny J, Ehrig H, Engels G, Rozenberg G, eds. <i>Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers</i>. Vol 1073. Berlin/Heidelberg: Springer; 1994. doi:<a href=\"http://dx.doi.org/10.1007/3-540-61228-9\">http://dx.doi.org/10.1007/3-540-61228-9</a>","mla":"Cuny, Janice, et al., editors. <i>Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers</i>. Vol. 1073, Springer, 1994, doi:<a href=\"http://dx.doi.org/10.1007/3-540-61228-9\">http://dx.doi.org/10.1007/3-540-61228-9</a>."},"place":"Berlin/Heidelberg","date_created":"2019-02-19T19:19:58Z","type":"conference_editor","department":[{"_id":"66"}],"status":"public","year":"1994","title":"Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers","date_updated":"2022-01-06T07:03:46Z","intvolume":"      1073","_id":"7798","series_title":"LNCS","language":[{"iso":"eng"}],"publisher":"Springer","doi":"http://dx.doi.org/10.1007/3-540-61228-9","user_id":"52534","editor":[{"full_name":"Cuny, Janice","last_name":"Cuny","first_name":"Janice"},{"first_name":"Hartmut","last_name":"Ehrig","full_name":"Ehrig, Hartmut"},{"first_name":"Gregor","last_name":"Engels","full_name":"Engels, Gregor","id":"107"},{"first_name":"Grzegorz","last_name":"Rozenberg","full_name":"Rozenberg, Grzegorz"}],"volume":1073},{"place":"Berlin/Heidelberg","date_created":"2019-02-20T13:54:14Z","department":[{"_id":"66"}],"type":"conference","citation":{"bibtex":"@inproceedings{Ebert_Engels_1994, place={Berlin/Heidelberg}, title={Structural and Behavioural Views on OMT-Classes}, volume={858}, booktitle={Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)}, publisher={Springer}, author={Ebert, Jürgen and Engels, Gregor}, year={1994}, pages={142–157} }","ama":"Ebert J, Engels G. Structural and Behavioural Views on OMT-Classes. In: <i>Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)</i>. Vol 858. Berlin/Heidelberg: Springer; 1994:142-157.","mla":"Ebert, Jürgen, and Gregor Engels. “Structural and Behavioural Views on OMT-Classes.” <i>Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)</i>, vol. 858, Springer, 1994, pp. 142–57.","chicago":"Ebert, Jürgen, and Gregor Engels. “Structural and Behavioural Views on OMT-Classes.” In <i>Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)</i>, 858:142–57. Berlin/Heidelberg: Springer, 1994.","short":"J. Ebert, G. Engels, in: Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy), Springer, Berlin/Heidelberg, 1994, pp. 142–157.","ieee":"J. Ebert and G. Engels, “Structural and Behavioural Views on OMT-Classes,” in <i>Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)</i>, 1994, vol. 858, pp. 142–157.","apa":"Ebert, J., &#38; Engels, G. (1994). Structural and Behavioural Views on OMT-Classes. In <i>Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)</i> (Vol. 858, pp. 142–157). Berlin/Heidelberg: Springer."},"publication":"Proceedings of the International Symposium on Object-Oriented Methodologies and Systems (ISOOMS 1994), Palermo (Italy)","abstract":[{"text":"Object-oriented specification languages provide means to specify the static structure, as well as the allowed dynamic behaviour of objects. Here, the dynamic behaviour is usually described by giving the methods and a state transition diagram which defines the allowed sequences of methods on objects of a certain class. Specialized classes are defined using the inheritance relationship. In order to enable reusability while guaranteeing type substitutability, subclass specifications have to be compatible with respect to static and dynamic aspects with their corresponding superclass specifications. Classes have to provide a large shopping list of operations to satisfy the needs of all possible users. The interests of specific users are often restricted to a subset of operations and thus to a restricted behaviour. This paper describes a formalization of class descriptions given by attributes, operations, as well as state transition diagrams. It defines compatibility between sub- and superclasses and introduces the notion of views in the sense of hiding parts of a class description. It turns out that a view has the same properties as a (virtual) superclass.","lang":"eng"}],"publisher":"Springer","_id":"7828","language":[{"iso":"eng"}],"page":"142-157","volume":858,"user_id":"52534","author":[{"first_name":"Jürgen","last_name":"Ebert","full_name":"Ebert, Jürgen"},{"id":"107","first_name":"Gregor","last_name":"Engels","full_name":"Engels, Gregor"}],"status":"public","title":"Structural and Behavioural Views on OMT-Classes","year":"1994","intvolume":"       858","date_updated":"2022-01-06T07:03:46Z"},{"department":[{"_id":"66"}],"type":"conference","date_created":"2019-02-20T13:58:33Z","abstract":[{"text":"Object-oriented system development is wideley recognized as improving productivity and reducing system maintenance costs. However, existing approaches have not sufficiently addressed the following three questions which are equally important to users and researchers. Firstly, what are the benefits of object-oriented system development compared to traditional approaches? Secondly, what are the essential features of an objectoriented life cycle model to fulfill the benefits of object-oriented development? And thirdly, what are the pitfalls of object-oriented development and how to cope with them? The paper investigates answers to all three questions in concert.","lang":"eng"}],"citation":{"short":"G. Engels, G. Kappel, in: Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany), Elsevier, 1994, pp. 434–441.","chicago":"Engels, Gregor, and Gerti Kappel. “Object-Oriented System Development: Will the New Approach Solve Old Problems?” In <i>Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)</i>, 3:434–41. Elsevier, 1994.","ieee":"G. Engels and G. Kappel, “Object-Oriented System Development: Will the New Approach Solve Old Problems?,” in <i>Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)</i>, 1994, vol. 3, pp. 434–441.","apa":"Engels, G., &#38; Kappel, G. (1994). Object-Oriented System Development: Will the New Approach Solve Old Problems? In <i>Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)</i> (Vol. 3, pp. 434–441). Elsevier.","bibtex":"@inproceedings{Engels_Kappel_1994, title={Object-Oriented System Development: Will the New Approach Solve Old Problems?}, volume={3}, booktitle={Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)}, publisher={Elsevier}, author={Engels, Gregor and Kappel, Gerti}, year={1994}, pages={434–441} }","ama":"Engels G, Kappel G. Object-Oriented System Development: Will the New Approach Solve Old Problems? In: <i>Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)</i>. Vol 3. Elsevier; 1994:434-441.","mla":"Engels, Gregor, and Gerti Kappel. “Object-Oriented System Development: Will the New Approach Solve Old Problems?” <i>Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)</i>, vol. 3, Elsevier, 1994, pp. 434–41."},"publication":"Proceedings of the IFIP 13th World Computer Congress on Information Processing, Hamburg (Germany)","volume":3,"user_id":"52534","publisher":"Elsevier","_id":"7829","language":[{"iso":"eng"}],"page":"434-441","intvolume":"         3","date_updated":"2022-01-06T07:03:46Z","author":[{"id":"107","last_name":"Engels","first_name":"Gregor","full_name":"Engels, Gregor"},{"last_name":"Kappel","first_name":"Gerti","full_name":"Kappel, Gerti"}],"title":"Object-Oriented System Development: Will the New Approach Solve Old Problems?","year":"1994","status":"public"},{"type":"conference","department":[{"_id":"66"}],"date_created":"2019-02-20T13:59:14Z","publication":"Proceedings Colloquium on Graph Transformation and its Application in Computer Science","citation":{"chicago":"Engels, Gregor, and Hartmut Ehrig. “Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective.” In <i>Proceedings Colloquium on Graph Transformation and Its Application in Computer Science</i>, Vol. B-19. Technical Report . Universitat de les Illes Balears, Departament de Ci, 1994.","short":"G. Engels, H. Ehrig, in: Proceedings Colloquium on Graph Transformation and Its Application in Computer Science, Universitat de les Illes Balears, Departament de Ci, 1994.","apa":"Engels, G., &#38; Ehrig, H. (1994). Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective. In <i>Proceedings Colloquium on Graph Transformation and its Application in Computer Science</i> (Vol. B-19). Universitat de les Illes Balears, Departament de Ci.","ieee":"G. Engels and H. Ehrig, “Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective,” in <i>Proceedings Colloquium on Graph Transformation and its Application in Computer Science</i>, 1994, vol. B-19.","ama":"Engels G, Ehrig H. Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective. In: <i>Proceedings Colloquium on Graph Transformation and Its Application in Computer Science</i>. Vol B-19. Technical Report . Universitat de les Illes Balears, Departament de Ci; 1994.","bibtex":"@inproceedings{Engels_Ehrig_1994, series={Technical Report }, title={Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective}, volume={B-19}, booktitle={Proceedings Colloquium on Graph Transformation and its Application in Computer Science}, publisher={Universitat de les Illes Balears, Departament de Ci}, author={Engels, Gregor and Ehrig, Hartmut}, year={1994}, collection={Technical Report } }","mla":"Engels, Gregor, and Hartmut Ehrig. “Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective.” <i>Proceedings Colloquium on Graph Transformation and Its Application in Computer Science</i>, vol. B-19, Universitat de les Illes Balears, Departament de Ci, 1994."},"user_id":"52534","volume":"B-19","publisher":"Universitat de les Illes Balears, Departament de Ci","_id":"7830","language":[{"iso":"eng"}],"series_title":"Technical Report ","date_updated":"2022-01-06T07:03:46Z","year":"1994","status":"public","title":"Towards a Module Concept for Graph Transformation Systems: The Software Engineering Perspective","author":[{"id":"107","first_name":"Gregor","last_name":"Engels","full_name":"Engels, Gregor"},{"full_name":"Ehrig, Hartmut","last_name":"Ehrig","first_name":"Hartmut"}]},{"date_created":"2019-03-03T16:12:48Z","department":[{"_id":"66"}],"type":"report","citation":{"chicago":"Ebert, Jürgen, and Gregor Engels. <i>Observable or Invocable Behaviour - You Have to Choose</i>. Vakgroep Informatica, Rijksuniversiteit Leiden, 1994.","short":"J. Ebert, G. Engels, Observable or Invocable Behaviour - You Have to Choose, Vakgroep Informatica, Rijksuniversiteit Leiden, 1994.","apa":"Ebert, J., &#38; Engels, G. (1994). <i>Observable or Invocable Behaviour - You Have to Choose</i>. Vakgroep Informatica, Rijksuniversiteit Leiden.","ieee":"J. Ebert and G. Engels, <i>Observable or Invocable Behaviour - You Have to Choose</i>. Vakgroep Informatica, Rijksuniversiteit Leiden, 1994.","ama":"Ebert J, Engels G. <i>Observable or Invocable Behaviour - You Have to Choose</i>. Vakgroep Informatica, Rijksuniversiteit Leiden; 1994.","bibtex":"@book{Ebert_Engels_1994, title={Observable or Invocable Behaviour - You Have to Choose}, publisher={Vakgroep Informatica, Rijksuniversiteit Leiden}, author={Ebert, Jürgen and Engels, Gregor}, year={1994} }","mla":"Ebert, Jürgen, and Gregor Engels. <i>Observable or Invocable Behaviour - You Have to Choose</i>. Vakgroep Informatica, Rijksuniversiteit Leiden, 1994."},"report_number":"94-38","publisher":"Vakgroep Informatica, Rijksuniversiteit Leiden","_id":"8193","language":[{"iso":"eng"}],"user_id":"52534","author":[{"full_name":"Ebert, Jürgen","last_name":"Ebert","first_name":"Jürgen"},{"full_name":"Engels, Gregor","last_name":"Engels","first_name":"Gregor","id":"107"}],"year":"1994","title":"Observable or Invocable Behaviour - You Have to Choose","status":"public","date_updated":"2022-01-06T07:03:52Z"},{"type":"conference","department":[{"_id":"66"}],"date_created":"2019-03-04T11:52:13Z","abstract":[{"lang":"eng","text":"We present the hybrid query language HQL/EER for an Extended Entity-Relationship model. As its main characteristic, this language allows a user to freely mix graphical and textual formulation of a query. We show how syntax and semantics of this hybrid language are formally defined by means of a slightly extended version of PROGRES, a specification formalism based on programmed and attributed graph rewriting systems."}],"publication":"Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)","doi":"http://dx.doi.org/10.1007/3-540-57787-4_2","language":[{"iso":"eng"}],"series_title":"LNCS","date_updated":"2022-01-06T07:03:52Z","intvolume":"       776","year":"1994","title":"Syntax and Semantics of Hybrid Database Languages","author":[{"full_name":"Andries, Marc","first_name":"Marc","last_name":"Andries"},{"id":"107","full_name":"Engels, Gregor","last_name":"Engels","first_name":"Gregor"}],"place":"Berlin/Heidelberg","citation":{"ama":"Andries M, Engels G. Syntax and Semantics of Hybrid Database Languages. In: <i>Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)</i>. Vol 776. LNCS. Berlin/Heidelberg: Springer; 1994:19-36. doi:<a href=\"http://dx.doi.org/10.1007/3-540-57787-4_2\">http://dx.doi.org/10.1007/3-540-57787-4_2</a>","bibtex":"@inproceedings{Andries_Engels_1994, place={Berlin/Heidelberg}, series={LNCS}, title={Syntax and Semantics of Hybrid Database Languages}, volume={776}, DOI={<a href=\"http://dx.doi.org/10.1007/3-540-57787-4_2\">http://dx.doi.org/10.1007/3-540-57787-4_2</a>}, booktitle={Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)}, publisher={Springer}, author={Andries, Marc and Engels, Gregor}, year={1994}, pages={19–36}, collection={LNCS} }","mla":"Andries, Marc, and Gregor Engels. “Syntax and Semantics of Hybrid Database Languages.” <i>Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)</i>, vol. 776, Springer, 1994, pp. 19–36, doi:<a href=\"http://dx.doi.org/10.1007/3-540-57787-4_2\">http://dx.doi.org/10.1007/3-540-57787-4_2</a>.","chicago":"Andries, Marc, and Gregor Engels. “Syntax and Semantics of Hybrid Database Languages.” In <i>Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)</i>, 776:19–36. LNCS. Berlin/Heidelberg: Springer, 1994. <a href=\"http://dx.doi.org/10.1007/3-540-57787-4_2\">http://dx.doi.org/10.1007/3-540-57787-4_2</a>.","short":"M. Andries, G. Engels, in: Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany), Springer, Berlin/Heidelberg, 1994, pp. 19–36.","apa":"Andries, M., &#38; Engels, G. (1994). Syntax and Semantics of Hybrid Database Languages. In <i>Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)</i> (Vol. 776, pp. 19–36). Berlin/Heidelberg: Springer. <a href=\"http://dx.doi.org/10.1007/3-540-57787-4_2\">http://dx.doi.org/10.1007/3-540-57787-4_2</a>","ieee":"M. Andries and G. Engels, “Syntax and Semantics of Hybrid Database Languages,” in <i>Proceedings of the International Workshop on Graph Transformations in Computer Science (1993), Dagstuhl (Germany)</i>, 1994, vol. 776, pp. 19–36."},"user_id":"52534","volume":776,"page":"19-36","_id":"8263","publisher":"Springer","status":"public"},{"type":"conference","department":[{"_id":"66"}],"place":"Berlin/Heidelberg","date_created":"2019-03-04T11:52:14Z","publication":"Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France)","citation":{"chicago":"Engels, Gregor, and Luuk Groenewegen. “Specification of Coordinated Behaviour by SOCCA.” In <i>Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France)</i>, 128–51. LNCS. Berlin/Heidelberg: Springer, 1994. <a href=\"http://dx.doi.org/10.1007/3-540-57739-4_19\">http://dx.doi.org/10.1007/3-540-57739-4_19</a>.","short":"G. Engels, L. Groenewegen, in: Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France), Springer, Berlin/Heidelberg, 1994, pp. 128–151.","ieee":"G. Engels and L. Groenewegen, “Specification of coordinated behaviour by SOCCA,” in <i>Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France)</i>, 1994, pp. 128–151.","apa":"Engels, G., &#38; Groenewegen, L. (1994). Specification of coordinated behaviour by SOCCA. In <i>Proceedings of the Third European Workshop on Software Process Technology (EWSPT 1994), Villard de Lans (France)</i> (pp. 128–151). 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Hereby, well-known extended Entity-Relationship diagrams are employed to specify the structural aspects. The behavioural aspects of a database application are specified by using ViAL (Visual Action Language). ViAL specifications are a special kind of data (or better object) flow diagrams, where so-called elementary actions are used as basic building blocks. These elementary actions are automatically derived from a given EER diagram. They guarantee that after finishing their execution all inherent integrity constraints are fulfilled. The paper explains the features of the language ViAL and gives some illustrating examples.","lang":"eng"}],"citation":{"short":"G. Engels, P. 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The focus is on sequential systems and the description is arranged according to the main paradigms that are used in indentifying software components. Following a general discussion on how to represent software architectures of large systems, each design paradigm is discussend separately with its basic concepts, its historical background and its main variants. Some multiparadigmatic approaches are discussed, as well which integrate several of the aspects introduced before."}],"date_created":"2019-02-04T22:39:16Z","department":[{"_id":"66"}],"type":"book_chapter","author":[{"full_name":"Ebert, Jürgen","last_name":"Ebert","first_name":"Jürgen"},{"first_name":"Gregor","last_name":"Engels","full_name":"Engels, Gregor","id":"107"}],"title":"Design Representation","status":"public","year":"1994","date_updated":"2022-01-06T07:03:39Z","publisher":"John Wiley & Sons, Inc.","_id":"7512","language":[{"iso":"eng"}],"page":"382-394","user_id":"52534"},{"publication":"Software Process Modelling and Technology","citation":{"chicago":"Engels, Gregor, and Luuk Groenewegen. “SOCCA: Specifications of Coordinated and Cooperative Activities.” In <i>Software Process Modelling and Technology</i>, 71–102. Taunton: Research Studies Press, 1994.","short":"G. Engels, L. 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