Abstract
Document retrieval systems have existed for some time. The architecture of these systems tends to reflect the philosophy of the original applications for which they were designed and lack the generality typical of data base management systems. A relatively recent development in DBMS design has been the evolution of the relational model. Unlike tree and network models, this approach appears to be of significant interest as the basis for the design of a document retrieval system. This paper discusses the applicability of the relational model to the design of retrieval systems.

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