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1. Give examples of 1:1, 1:N, and N:M relationships (other than those presented in chapter 5). Draw two E-R diagrams for each of your examples:

1. Give examples of 1:1, 1:N, and N:M relationships (other than those presented in chapter 5). Draw two E-R diagrams for each of your examples: one using the traditional diamond notation and one using IE Crow’s Foot notation.


AGENT 1:1 CAR AGENT_VEHICLE

AGENT 1:N CLIENT AGENT_CLIENT

  
 

2. Describe the relationship between the structure of forms and reports and the data model.

3. Explain the difference between IS-A and HAS-A relationships.

4. Explain why the data modeling process must be iterative. Use the Highline University example.

AGENT 1:1 CAR AGENT VEHICLE

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