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(solution) 5. Refer to the following figure, and answer the following


*Figure attached

5.         Refer to the following figure, and answer the following questions (4 points):

  1. What is the identifier for the CERTIFICATE associative entity?
  2. Now, assume that the same employee may take the same course multiple times, on different dates. Does this change your answer to part a? Why or why not?  
  3. Now, assume we want to keep track of the instructor who issues each certificate to each employee for each course. How would you relate this new entity with the other entities?
  4. How did you choose to relate INSTRUCTOR to CERTIFICATE and why?


5. Refer to the following figure, and answer the following questions (4 points): What is the identifier for the CERTIFICATE associative entity?

 

Now, assume that the same employee may take the same course multiple times, on different dates.

 

Does this change your answer to part a? Why or why not?

 

c. Now, assume we want to keep track of the instructor who issues each certificate to each employee

 

for each course. How would you relate this new entity with the other entities?

 

d. How did you choose to relate INSTRUCTOR to CERTIFICATE and why?

 

a.

 

b. Page | 1

 


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