| Explain the three layer in three tier Architecture?
As we all are aware that three tier Architecture is mainly used as code reusability. Below are the three layers of three tier Architecture:-
(1)Business Access Layer(BAL):-When we say about the BAL in three tier architecture we use this layer to defines a function or class to use to transfer data into Data Access Layer and Presentation Access.
(2)Data Access Layer(DAL):-When we say about the DAL in three tier architecture this layer provides contents of logic to implement a program for example we use insert, update and Delete logic of code in DAL Layer.
(3)User Interface Presentation Access Layer(UI (PAL)):-When we say about PAL layer it is use for design purpose and it is as display unit.
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