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54

Michel Lacroix , Alain Pirotte, Associating types with domains of relational data bases, ACM SIGMOD Record, v.11 n.2, p.144-146, Feb 1981

55

[LAME80] Lamersdorf, W. and J.W. Schmidt. "Semmntic Definition of PASCAL/R". Berichte Nr. 73 and 74, University of Hamburg, Federal Republic of West Germany, July 1980.

56

[LORIE79] Lorie, R.A., R. Casajuana and J.L. Becerril. "GSYSR: A Relational Database Interface for Graphics". Research Report RJ2511, April 1979.

57

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[OWLE77] Owlett, J. "Deferring and Defining in Databases". A section of: "Architecture and Models in Data Base Management Systems". Proc. of the IFIP Working Conf. on Modelling in Data Base Management Systems, November 1977.

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[PIR079] Pirotte, A. "Fundamental and Secondary Issues in the Design of Non-Procedural Languages". Proc. 5th VLDB, Rio de Janiero, Brazil, August 1979, pp. 239-250.

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Winfried Lamersdorf, Comparison of four relational data model specifications, ACM SIGMOD Record, v.13 n.3, p.18-31, April 1983

Dzenan Ridjanovic , Michael L. Brodie, Action and transaction skeletons:: High level language constructs for database transactions, Proceedings of the 1983 ACM SIGPLAN symposium on Programming language issues in software systems, p.94-99, June 27-29, 1983, San Francisco, California, United States

Timo Niemi , Kalervo Järvelin, A straightforward formalization of the relational model, ACM SIGMOD Record, v.14 n.1, p.15-38, 1983

Manfred Ruschitzka , John L. Clevenger, Heterogeneous Data Translations Based on Environment Grammars, IEEE Transactions on Software Engineering, v.15 n.10, p.1236-1251, October 1989

A. L. Furtado, An informal approach to formal specifications, ACM SIGMOD Record, v.14 n.1, p.45-54, 1983

A. L. Furtado, An informal approach to formal specifications, ACM SIGMOD Record, v.13 n.3, p.32-41, April 1983

Matthias Jarke , Yannis Vassiliou, A framework for choosing a database query language, ACM Computing Surveys (CSUR), v.17 n.3, p.313-340, Sept. 1985

Arthur M. Keller, Choosing a View Update Translator by Dialog at View Definition Time, Proceedings of the 12th International Conference on Very Large Data Bases, p.467-474, August 25-28, 1986

Dines Bjørner , Hans Henrik Løvengreen, Formalization of Database Systems - and a Formal Definition of IMS (Invited Paper), Proceedings of the 8th International Conference on Very Large Data Bases, p.334-347, September 08-10, 1982

Michael L. Brodie: colleagues

Joachim W. Schmidt: colleagues