- At first glance, the three tiers may seem similar to the model-view-controller (MVC) concept; however, topologically they are different. A fundamental rule in a three tier architecture is the client tier never communicates directly with the data tier; in a three-tier model all communication must pass through the middle tier. Conceptually the three-tier architecture is linear. MVC architecture is triangular.
- 3 tier architecture is a pattern used for a completely different reason. It separates the entire application into meaningful “groups”: UI, Business Logic, Data Storage.
- In MVC : MVC architecture is triangular: the view sends updates to the controller, the controller updates the model, and the view gets updated directly from the model.
- In Three Tier : A three tier architecture is the client tier never communicates directly with the data tier In a Three-tier model all communication must pass through the middle tier.
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