A relational model of data for large shared data banks
Communications of the ACM
An introduction to database systems (The Systems programming series)
An introduction to database systems (The Systems programming series)
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In this paper we suggest how, focusing on the concept of property, one can use a very small number of operators (functions) to organize a factual data base whose information structures are constructed as simple association lists. The approach was used to design and implement a data base management system, operating in a small-core/slow-secondary-storage environnment, as a part of a low cost multimicroprocessor robot system.