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Jungclaus, R., G. Saake, and C. Sernadas, "Using Active Objects for Query Processing", Object-Oriented Databases: Analysis, Design and Construction (Proc1 4th IFIP WG 2.6 Working Conference DS-4, Windermere (UK), 1990): North-Holland, pp. 285-304, 1991. Abstract
Ehrich, H. - D., and A. Sernadas, "Algebraic Implementation of Objects over Objects", Proc REX Workshop ``Stepwise Refinement of Distributed Systems: Models, Formalisms, Correctness'': LNCS 430, Springer, Berlin, pp. 239-266, 1990. Abstract  Download: 1990AlgImplem.pdf (479.42 KB)
Engels, G., U. Hohenstein, K. Hülsmann, P. Löhr-Richter, and H. - D. Ehrich, "CADDY: Computer-Aided Design of Non-Standard Databases", Proc 1st Int Conf on System Development Environments and Factories: Pitman, London, 1990. Abstract  Download: 1990Caddy.pdf (896.19 KB)
Ehrich, H. - D., A. Sernadas, and C. Sernadas, "From Data Types to Object Types", Journal on Information Processing and Cybernetics EIK, vol. 26, no. 1-2, pp. 33-48, 1990. Abstract  Download: 1990EIK.pdf (875.31 KB)
Sernadas, A., H. - D. Ehrich, and J. - F. Costa, "From Processes to Objects", The INESC Journal of Research and Development 1:1, pp. 7-27, 1990. Abstract  Download: 1990INESC.pdf (997.32 KB)
Gogolla, M., Datalog - Eine deduktive Datenbanksprache, , no. 25: Technische Universität Braunschweig, 1990. Abstract
Neumann, K., "Erfahrungen mit einem geowissenschaftlichen/kartographischen Datenbank-Prototyp", Proc1 Workshop ``Wissensbasierte Systeme in den Geowissenschaften'', Berlin 1989: Arbeitsbereich Informationswissenschaften & Institut für Geologie, FU Berlin, pp. 73-91, 1990. Abstract
Karge, U., and M. Gogolla, Formal Semantics of SQL Queries, , no. 90-01: Technische Universität Braunschweig, 1990. Abstract
Lohmann, F., and K. Neumann, "A Geoscientific Database System Supporting Cartography and Application Programming", Proc1 8th British Nat1 Conf1 on Databases BNCOD-8: Pitman, London, 1990, pp. 179-195, 1990. Abstract
Saake, G., and R. Jungclaus, "Information about Objects versus Derived Objects", Second Workshop on Foundations and Languages for Data and Objects: Informatik-Bericht 90/3, Technische Universität Clausthal, pp. 59-70, 1990. Abstract
Hülsmann, K., and G. Saake, "Representation of the Historical Information Necessary for Temporal Integrity Monitoring", Proc1 Int1 Conf1 on Extending Database Technology EDBT'90: LNCS 416, Springer, Berlin, 1990, pp. 378-392, 1990. Abstract
Hülsmann, K., "Temporal Integrity Constraints in the Database Design Environment CADDY", Proc1 Workshop on Foundations of Models and Languages for Data and Objects, Aigen (A): Informatik-Bericht 90/3, TU Clausthal, pp. 191-198, 1990. Abstract
Sernadas, A., J. Fiadeiro, C. Sernadas, and H. - D. Ehrich, "Abstract object types: A temporal perspective", Proc. Colloq. on Temporal Logic in Specification, B. Banieqbal, H. Barringer, and A. Pnueli, editors: Springer LNCS 398, 1989. Abstract  Download: 1989AbstrObjTypes.pdf (393.35 KB)
Ehrich, H. - D., G. Engels, M. Gogolla, G. Saake, and (eds), "Abstracts des Workshops "Grundlagen von Datenbanken"", Abstracts des Workshops "Grundlagen von Datenbanken": Informatik-Bericht Nr. 89-02, Technische Universität Braunschweig, 1989. Abstract
Sernadas, A., J. Fiadeiro, C. Sernadas, and H. - D. Ehrich, "The Basic Building Block of Information Systems", Information System Concepts: An In-Depth Analysis: North-Holland, Amsterdam, 1989, pp. 225-246, 1989. Abstract  Download: 1989BBBofIS.pdf (1.08 MB)
Lohmann, F., K. Neumann, and H. - D. Ehrich, "Entwurf eines Datenbank-Prototyps für geowissenschaftliche Anwendungen", Proc GI/SI-Fachtagung ``Datenbanksysteme in Büro, Technik und Wissenschaft'': Springer, Berlin, 1989, pp. 43-57, 1989. Abstract  Download: 1989BTW.pdf (557.01 KB)
Ehrich, H. - D., A. Sernadas, and C. Sernadas, "Objects, Object Types, and Object Identification", Categorical Methods in Computer Science: LNCS 393, Springer, Berlin, pp. 142-156, 1989. Abstract  Download: 1989ObjOtypOid.pdf (313.66 KB)
, Abstracts des Workshops ``Grundlagen von Datenbanken'', : Technische Universität Braunschweig, Informatik-Bericht 89-02, 1989. Abstract
Gogolla, M., "Algebraization and Integrity Constraints for an Extended Entity-Relationship Approach", Proc1 Theory and Practice of Software Developmen1 (TAPSOFT'89): Springer, Berlin, LNCS 351, pp. 259-274, 1989. Abstract
Hohenstein, U., "Automatic Transformation of an Entity-Relationship Query Language into SQL", Proc1 8th Int1 Conf1 on the Entity-Relationship Approach, pp. 309-327, 1989. Abstract
Engels, G., "CADDY-O: Syntaxgestütztes, graphisches Entwerfen konzeptioneller Datenbankschemata", Proc1 GI-Fachtagung ``Interaktive Schnittstellen für Informationssysteme'', pp. 1-16, 1989. Abstract
Lipeck, U. W., and D. S. Feng, "Construction of Deterministic Transition Graphs from Dynamic Integrity Constraints", Proc1 14th Int1 Workshop on Graph-Theoretic Concepts in Computer Science (WG'88): LNCS 344, Springer, Berlin, pp. 166-179, 1989. Abstract
Küspert, K., G. Saake, and L. Wegner, "Duplicate Detection and Deletion in the Extended NF$^2$ Data Model", Proc1 3rd Int1 Conf1 on Foundations of Data Organization and Algorithms (FOD1 '89), Paris: LNCS 367, Springer, pp. 83-100, 1989. Abstract