25 May Question 5. Consider the E-R
Question
5. Consider the E-R
diagram in Figure 7-20. Based on this E-R diagram, answer the following
questions:
a. How many EMPLOYEES
can work on a project?
b. What is the degree
of the Used_on relationship?
c. Do any associative
entities appear in this diagram? If so, name them.
d. How else could the
attribute Skill be modeled?
e. What attributes
might be attached to the Works_on relationship?
f. Could TOOL be
modeled as an associative entity? Why or why not?
FIGURE 7-20 E-R
diagram for Problem and Exercise 5.
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