Adrian MacCallum & Rodger Morash M3 - Part 3 Adrian MacCallum & Rodger Morash

What is Data Modeling? Data Modeling is a technique for organizing and documenting a system’s DATA.

Why is data modeling important? It removes biases. It reduces the risk of missing business requirements. It allows the system analyst to communicate with end users.

What is a key-based data model? This model will eliminate non-specific relationships, add associative entities, include primary, alternate keys, and foreign keys, plus precise cardinalities and any generalization hierarchies.