What is a derived attribute

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Reference no: EM131529041

Question: 1. Discuss the difference between a composite key and a composite attribute. How would each be indicated in an ERD?

2. What two courses of action are available to a designer who encounters a multivalued attribute?

3. What is a derived attribute? Give an example.

4. How is a relationship between entities indicated in an ERD? Give an example using the Crow's Foot notation.

Reference no: EM131529041

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