Darwin city council in Northern Territory, Australia is planning to introduce a smart waste management system to optimize waste collection routes, monitor recycling rates, and reduce landfill usage. The system will use loT$-$enabled bins and data analytics to track waste patterns and improve efficiency. The primary goal is to enhance sustainability, reduce environmental impact, and lower operational costs. The platform will be accessible to city workers for monitoring and analysis, and to residents for real$-$time updates on waste collection schedules and recycling tips.

For the smart waste management system, prepare the following diagrams:

a$)$ Use case diagram including at least $3$ actions for each of the identified actors.

b$)$ ER Diagram considering users, devices, waste bins, and collection history.

c$)$ Sequence diagram for the process of a waste bin sending a full status alert to the system.