D.A. Nelson
B.N. Rossiter
M.A. Heather
University of Newcastle upon Tyne. 1994
Owing to the recognised deficiencies in relational databases, a new generation of object-oriented database systems are emerging. The major deficiency of many of these new systems is in their formal basis, and in aspects such as views and closure. To aid this cause, a model has been developed based on the category theory, known as the functorial, or the categorical product model. This paper will introduce an example database model using the functorial model, comparing it to the DAPLEX functional model developed in the early eighties.