AbstractWe know that a database come from the theory of sets and that they repre-sent a part of the field of expertise of a company, of a user... But which are the means to recover these data today? Language SQL, the forms carried out with the request (according to the load of a Information Systems department) could be solutions. Such an amount of effort, on the one hand and the other, which are expensive. Are of them there no others? This memory will present the problem of the queries of the databases and will present a solution drawn from the theory of Visual Query Language (VQL) These Visuals Query Language of databases will be presented to you at the chap-ter "Etat de l'art" and an ideal solution then will result from this. The purpose of the reduced solution will be to carry out a graphic editor who will prove the feasi-bility of the ideal solution. An example at the end of this chapter will make it pos-sible to better include/understand its operation. To be able to interpret the VQL and to translate it into a language of basic interrogation of data (SQL for example) the editor is pressed on a syntactic tree which it will transmit to a compiler. This item is discussed in the chapter ` Solution réduite'
|Date of Award||2004|
|Supervisor||Vincent ENGLEBERT (Supervisor)|
Etude d'un langage visuel d'interrogation de base de données
Duchene, L. (Author). 2004
Student thesis: Master types › Master in Computer science