1 OOP

Solid Principles

Single-responsibility principle: Every class should have only one responsibility
Open–closed principle: Classes should be open for extension, but closed for modification
Liskov substitution: Every subclass or derived class should be substitutable for their base or parent class(obey the rules)
Interface segregation: Interfaces should not force classes to implement what they can't do. Large interfaces should be devided into small ones
Dependency inversion: Abstractions should not depend on details. Details (concrete implementations) should depend on abstractions

Unified Modeling Language

20211005144832

N Tier Architecture

20230416214548