What does the integration definition for functional modeling (IDEF) primarily focus on?

The integration definition for functional modeling (IDEF) primarily focuses on providing modeling languages for system and software engineering. This approach is essential for representing complex systems in a structured manner, allowing for clearer understanding and communication among stakeholders. IDEF methodologies, particularly IDEF0, are used to model the functions of a system, helping to analyze and define interactions among different components. This facilitates better design and integration of systems by ensuring that all functional aspects are captured and understood.

The other aspects mentioned, such as defining project timelines, creating financial models, or developing user training programs, are related to different areas of project management and development but do not align with the primary objective of IDEF, which is centered on functional representation and analysis within systems engineering.