Conceptual and Physical Models
What the person had in mind was the “conceptual model,” and what the chef created was the “physical model” of the sandwich tray.
What is a Conceptual Model?• Models functional and informational needs of a business• Based on current needs and may reflect future needs• Deals only with business needs, does not deal with implementation problems.• Called an “Entity Relationship Model”• Shown with an “Entity Relationship Diagram”
The client’s dream (conceptual model) will become a physical building (physical model).
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