Towards a Flexible Database Interrogation
نویسندگان
چکیده
In this paper, we are interested in the use of domain ontologies as a semantic enrichment for traditional databases. Our first aim is to help the user in his search when his initial query doesn’t return any result. So, we propose a solution based on two different approaches allowing the user to express his interrogation in a relatively free way. The first approach detects and resolves naming and schematic conflicts. It is an ontological approach for SQL query expansion generating a set of queries. The second one is a join detection approach to eventually add all missed constraints in each generated query.
منابع مشابه
New architecture of fuzzy database management systems
Fuzzy relational data bases have been extensively studied in a theoretical level. Unfortunately, the repercussions of these works on the practical plan are negligible. Medina et al. have developed a server named fuzzy SQL, supporting flexible queries and based on a theoretic model called GEFRED. This server has been programmed in PL/SQL language under Oracle database management systems. To mode...
متن کاملInterrogation flexible et coopérative d'une BD par abstraction conceptuelle hiérarchique
RÉSUMÉ. L' interrogation des bases de données (BD) nécessite une connaissance précise et détaillée des données et de leur organisation. L’interrogation flexible tente de rendre l’interrogation classiques des BD plus souple pour les utilisateurs. Plusieurs approches d’interrogation flexible ont été proposées dans la littérature. Nous proposons, dans ce papier, une approche flexible et coopérativ...
متن کاملDesigning a Bank-Based Flexible Performance Evaluation System (Study: Bank Shahr)
Given the limitations of the existing performance evaluation models for organizations with dynamic internal and external conditions, this study aims to provide a flexible performance evaluation model with adaptability to intra- and extra-organizational changes. The present study first forms a database of criteria related to banking activities. After gathering the experts' opinions, we select 2...
متن کاملA flexible routing architecture for ad hoc space networks
Future space missions are envisioned to be implemented using a flexible, distributed architecture consisting of constellations of dynamically deployed or configured space and mobile platforms that are networked together into an integrated information system, which we term an ad hoc space network. An ad hoc space network is characterized by changing topology and potentially sparse and intermitte...
متن کاملA Fuzzy Ontology-Based Platform for Flexible Querying
Flexible queries have recently received increasing attention to better characterize the data retrieval. In this paper, a new flexible querying approach using ontological knowledge is proposed. This approach presents an FCA based methodology for building ontologies from scratch then interrogating them intelligently through the fusion of conceptual clustering, fuzzy logic, and FCA. The main contr...
متن کامل