Please use this identifier to cite or link to this item: http://hdl.handle.net/1880/46281
Title: APPLICATION OF SQL/N AND ASSOCIATION MODES TO DATA BASES CONTAINING RECURSIVE ASSOCIATIONS
Authors: Bradley, J.
Keywords: Computer Science
Issue Date: 1-Mar-1985
Abstract: Modes of association are defined for the recursive associations that occur in bill of materials data bases and data bases for the family tree of corporations. It is shown that a series of useful modes may be defined. Modes of association may be schema defined to enable a relational data base system capture more meaning about an association. When used with natural quantifiers and SQL/N, an upward-compatible extension of SQL, they permit construction of concise expressions for complex retrievals involving explosions and implosions of entities described in the data base. A mode of association is a set of propositions, each describing a pair of associated entities.
URI: http://hdl.handle.net/1880/46281
Appears in Collections:Bradley, James

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