Assignment Details: The goal of this assignment is to Understand how graphical models can be used to represent software systems and why several types of model are needed to fully represent a system; Understand the fundamental system modeling perspectives of context, state, use case and behavior(sequence) diagrams. Assume you want to design an elevator system, write the following its models: (10 marks) 1. Context diagram that model its main subsystems. 2. Use case diagram which show the interactions between a system and its environment 3. Develop a sequence diagram showing the interactions between actors and the system and between system components. 4. Draw state diagrams which show how the system reacts to internal and external events. Assignment Policies: - Read the task carefully. - Solve the assignment without sharing your answer with other students. - Any two answers that appear similar will be marked ZERO. - Save your answer as (images or .pdf) file format on the intended assignment link on the E-Learning course page Moodle. - The end date of submission is 26/8/2022 (11:00 pm)