A Quaestor project file (*.QPF3) contains all project data and solutions and works in combination with a specific knowledge base. The project file has a more dynamic character than the knowledge base file. It contains data and solutions that are valid within the project.
Knowledge base (*.qkb3) + project file (*.qpf3) + Quaestor (Quaestor.exe) = knowledge based system
Using the Quaestor project file DataBase, project files can be saved in the project database. In this way you can query in all data and solutions of projects saved in the database and use the results as data in your (new) project.