Discuss the distinction between top-down and bottom-up approaches in database design.

Due in 22 hours. One paragraph (100 words or more) for each question. 

 

 

1. Discuss the distinction between centralized and decentralized conceptual database design.

 

2. Discuss the distinction between top-down and bottom-up approaches in database design.

 

3. What is a composite entity, and when is it used?

 

4. Why are entity integrity and referential integrity important in a database?

 

 

5. What is the difference between a database and a table?

 

6. What two conditions must be met before an entity can be classified as a weak entity? Give an example of a weak entity.

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