CaseTalk supports Fully Communication Oriented Information Modeling (FCO-IM). This method evolved in the early 90's as a continuation on a previous developed method called NIAM. It focuses on the problem domain and not the implementation domain.

Information architecture distinguishes between different layers and compartments, each with specific models. The compartments are then ordered and their models aligned. This article described the compartments and models influenced by CaseTalk and by Fact Based Modeling.

Information systems are meant to automate the repetetive tasks of the employees of your business. Systems administer data relevant to it's business owners and users (E.g.: people, places, things, events and reasons). Designing these systems requires lists of datamodels, proces models, database models, schemas and diagrams with object classes, procedures, documentation sets, and lots more.