Information retrieval on ontology based in keywords

This paper presents a method of retrieval information on ontologies that allow users to view a keyword or descriptor closely related concepts get it. The application is divided into two modules that are: storing ontologies in relational databases and search on that database using keywords. For storage was created a scheme based on ontological components and finding the words was performed with an algorithm that calculates the semantic closeness between the concepts of ontology, and then presents the results close to the target user's search algorithm using a ranking.