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A universal relation model for nested relations
1988The Universal Relation (UR) model has been researched with the ultimate objective to free the user from logical navigation in a relational database. There have been many different suggestions as to how to implement a UR interface. Nested relations have been recently suggested as a way of extending the applicability of the classical relational model. In
Mark Levene, George Loizou
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A model for triadic relations.
Psychological Methods, 1997David A. Kenny+2 more
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