Conceptual ERD is the simplest model among all. The need of satisfying the database design is not considered yet. Entities and relationships modeled in such ERD are defined around the business’s need. Conceptual ModelĬonceptual ERD models information gathered from business requirements. In Visual Paradigm, you can draw and keep track of the traceability between conceptual, logical and physical model. A general understanding to the three models is that, business analyst uses conceptual and logical model for modeling the data required and produced by system from a business angle, while database designer refines the early design to produce the physical model for presenting physical database structure ready for database construction. While they all contain entities and relationships, they differ in the purposes they are created for and audiences they are meant to target.
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