Visual Query Manager: A Query Manager for Visual Management of Semantic Databases

Experience has shown that the traditional query languages do not provide user-friendly means for a casual user. In addition, no mechanism is provided to guide him in the process of understanding the information contained in the database. The work carried out in the context of this paper is therefore based on a central issue: assisting an occasional user in the database management process. Indeed, faced with the complexity of traditional query languages, it becomes important to propose ways of friendly interaction that help the nonprofessional user in different databases management exercises, which are adapted to its needs and its daily use. Our graphical query language is based on a generic three-tier architecture. It is based on four basic components: The Graphical Data Meta-Model that provides a meta-modeling of the data model of this language. The Graphical Manipulation Language and the primitives associated therewith. And finally, the prototype of validation that is based primarily on an iconic query-composition interface, and a visualization interface of the query results.