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|Title:||APPLICATION OF SQL/N AND ASSOCIATION MODES TO DATA BASES CONTAINING RECURSIVE ASSOCIATIONS|
|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.|
|Appears in Collections:||Bradley, James|
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