$GTCH The knowledge database is an organized collection of facts and rules about a topic. In qTerm, the database will be the user's vitals data and measurement that is taken over time. The facts analysis engine interprets and evaluates the knowledge base facts in order to provide the best answer for a query. Typical implementations of expert systems are data analysis, diagnostics, gaming, classifications or specific tasks. Upon a query the analysis engine fetches the relevant knowledge from the knowledge base, interprets it and to find a solution that is the most relevant to the problem. In an efficient expert system many facts are acquired and evaluated. The system provides the best answer to the query based on the provided knowledge.