Moreover, a knowledge base can contain "static" or generic data. With static data we mean data that is constant and can be seen as knowledge (information, data with a meaning).
Please note that the extension has been changed from *.qkb to *.qkb3 since the introduction of Quaestor 3. The binary has a different format, which is upgraded from *.qkb to *.qkb3 when you open an old knowledge base in Quaestor 3.
Knowledge based system
Together with Quaestor, it makes the development platform for knowledge based systems.
Quaestor (.exe) + Knowledge base (.qkb3) = knowledge based system: A combination used by Knowledge Engineers.
Furthermore, it is the fundament for a Quaestor project file that contains al project specific data and solutions in the knowledge based system.