Exercise 1: ERD . Use the following business rules to create a Crow's Foot ERD. Write all appropriate connectivities and cardinalities in the ERD. A department employs many employees, but each employee is employed by only one department. Some employees, known as "rovers," are not assigned to any department. A division operates many departments, but each department is operated by only one division An employee may be assigned many projects, and a project-may have many employees assigned to it. A project must have at least one employee assigned to it. One of the employees manages each department, and each department is man-aged by only one employee. One of the employees runs each division, and each division is run by only one employee. AUSTRALIAN INSTITUTE