Dictionary Meaning: The meaning of “Constant” is “Something that does not or cannot change or vary.” What is Constant? Constants are unchangeable value that do not change for the life of the program. Constants are declared with the const modifier.
MVC is a framework pattern that splits an application’s implementation logic into three component roles: models, views, and controllers.
It is a single deploy able unit that contains all the information about the implementation of classes , structures and interfaces