Draw an E-R diagram for each of the following situations (if
you believe that you need to make additional assumptions, clearly
state them for each situation):
1. A laboratory has several chemists who work on one or more
projects. Chemists also may use certain kinds of equipment on each
project. Attributes of CHEMIST include Employee_ID (identifier),
Name, and Phone- No. Attributes of PROJECT include ProjecUD
(identifier) and Start_Date. Attributes of EQUIPMENT include
Serial_No and Cost. The organization wishes to record...