Answer: The 3 tier architecture is made up of three layers: the presentation layer (or user interface layer), the business logic layer (or application layer), and the data access layer (or data layer). The presentation layer is responsible for displaying data and communicating with the user. The business logic layer contains the business rules and logic that drive the application. Finally, the data access layer is responsible for connecting to the database and executing database queries.
Step-by-step explanation: