2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/222630This paper presents the use of a computer application based on a MySQL database, managed by PHP programs, allowing the selection of a heating device using coefficient-based calculus.8 pages (121-128), 5th "Actualities and Perspectives in Hard and Soft", 2007Databasestext