• October 2nd, 2017

Unit 2 Assignment 2

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CIS 223 Unit 2 Assignment 2
2. What is a strong (or identifying) relationship, and how is it depicted in a Crow’s Foot ERD?
4. What is a composite entity, and when is it used?
5. Suppose you are working within the framework of the conceptual model in Figure Q4.5. (Please Follow The attached question 5 Reference Model)
Given the conceptual model in Figure Q4.5:
a. Write the business rules that are reflected in it.
b. Identify all of the cardinalities.
6. What is a recursive relationship? Give an example.
14. What three (often conflicting) database requirements must be addressed in database design?

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