GRANADA: relational database navigation and scaling

In this paper an application is presented that allows the construction of conjunctive queries (represented as labeled graphs), the presentation of the results of the queries (as tables), and the selection of options for specialization or generalization of the graph queries. The graph labels correspond to the query vocabulary, which is obtained by conceptual scaling of the database. Each scale provides the specialization and generalization options for a particular kind of graph node. At any time, the user is shown the current query, the result table, and a set of options to modify the query.