MOREIRA JÚNIOR, V. M.; http://lattes.cnpq.br/2795576108415626; MOREIRA JÚNIOR, Vicente Manuel.
Resumo:
One of the main objectives of information systems is to offer a human-computer
interaction the most natural possible. To meet this necessity, from the database query
viewpoint, the objective of this dissertation is to detect and expose ambiguies in conceptual
queries.
The interface used for query construction is the Universal Relation Interface
[Korth84], which provides logical data independence.
For ambiguity detection, the Minimum Object Approach [Wald90] is used.
Ambiguitiesare detected is at the DB scheme level.
An Extended Entity-Relationship data model (EER) is used, which is an extension
of Chen's Entity-Relationship (ER) Data Model [Chen76], by allowing a better
specification of the data semantics aiding the query interpretation.