A laboratory would like to store information about employees, scientists, projects, and equipment. Since you are taking a database class, y specifications. Each employee has a unique ID$,$ name, phone, address, date hired, and salaryEmployees are further classified as scientists and tec For technicians, we keep track of their certifications For each project, we need to record its start date, end date, cost, and location. In addition, each project can be uniquely identified by Each piece of equipment has a unique serial number and a cost. The laboratory has several scientists who work on one or more projects. Scientists also may use certain kinds of equipment on each given equipment item was assigned to a particular scientist working on a specified project. A scientist must be assigned to at least o to be assigned, and a given project does not need to be assigned to either a scientist or an equipment item. Design an ER$/$EER$-$diagram for the database by identifying the entity sets, relationship sets, and their multiplicity, and the p relationship set. Note that Chen's ER$/$EER Diagram notation $($adopted in the required textbook and lecture following questions $..$ Which of the following statements is true $?($entering a$,$ b$,$ c or d$)$ a$.$ "Projects" is an entity set and has six attributes.