Study the E-R diagram of Figure 1. Based on this E_R diagram, answer the following questions. a) How many PROJECTS can an employee work on? b) Can you think of some attributes that can be attached to the works on relationship? If yes, write the corresponding assumptions in a descriptive form. =) How else could the attribute Skill be modeled? d) Could TASK be modeled as an associative entity? Project ID EMPLOYEE Works_on PROJECT Employee ID Includes Skill TOOL Used_on TASK Task_ID Figure-1- Done_at CITY Time a) b) 5. For the entity-relationship diagram provided in Figure-2-, perform the following: Describe any assumption you must make about relevant business rules. Add the relationship cardinalities for each link and describe them. c) Are there any changes or additions you would make to this diagram to make it better? Why or why not? CUSTOMER Place ORDER Includes Generate COMPONENT Comprised of PRODUCT BACKORDER Supplied by VENDOR Figure-2- CITY Figure-1-