Q4:Consider the following case: Pick and Shovel Construction Company is a multi-state building contractor specializing in medium-priced town homes. Assume that Pick and Shovel's main entities are customer (name - ID - Address) , employee, project and equipment. A customer can hire the company for more than one project, and an employee works on more than one project at a time. Equipment, however, is assigned to only one project at a time Draw an ER diagram and relationships that you have discovered