The Unified Modeling Language (UML) serves as a fundamental tool in the realm
of software engineering,[10] undertaking the task of capturing and documenting the
intricate decisions and ideas associated with the design and construction of software
systems.It is characterized by its ability to represent the domain in an abstract, platform-agnostic manner, making it a tool for achieving excellence in structure and independence.Sequence Diagrams
It is a powerful tool that helps in understanding the design and documentation of a dynamic and complex interaction completely during the practical design phas.because it show how messages are sent between objects or other instances to perform a task,The use case diagram in the Unified Modeling Language (UML) [15] serves as the foundation for defining system requirements in the early stages of any new software project.This step ensures that
all required functionality is captured in the diagram.