Some issues of fuzzy querying in relational databases

Some issues of fuzzy querying in relational databases

Querying fuzzy relational databases through fuzzy domain calculus

1, 2 a 3 Jose Galindo, * Juan Miguel Medina, M Carmen Aranda ́ Departamento Lenguajes y Ciencias de la Computacion, Universidad de ́ Malaga, E.T.S.I. Informatica 29071 Malaga, Spain ́ ́ ́ Departamento Ciencias de la Computacion e I.A., Universidad de Granada, ́ Av Andalucia no 38, 18071 Granada, Spain Departamento Lenguajes y Ciencias de la Computacion, Universidad de ́ Malaga, E.T.S.I. Informatica 29...

Querying Relational Databases with RDQL

Most Semantic Web applications are still unable to query data stored in relational databases using their own built-in functionality. Hence, needing access to such data, they have to fall back on SQL and the relational model. In this paper we describe Relational.OWL, our technique to automatically extract the semantics of relational databases and transform this information into a machine process...

Customizable Flexible Querying in Classical Relational Databases

The need to flexibly query relational databases has been widely recognized as a means to improve the effectiveness of the retrieval in current systems using SQL for expressing information needs. The main inadequacy of the SQL language is caused by the crisp algebra on which it is founded that does not support the ranking of the results with respect to their relevance to user needs. In this book...

Object-Oriented Querying of Existing Relational Databases

In this paper, we present algorithms which allow an object-oriented querying of existing relational databases. Our goal is to provide an improved query interface for relational systems with better query facilities than SQL. This seems to be very important since, in real world applications, relational systems are most commonly used and their dominance will remain in the near future. To overcome ...