ERD Diagrams presentation computer science homework help

Prepare a PPT presentation that addresses the following in ERD Diagrams: need atleast 15-20 slides

1. How do you decide on entities (tables)?

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2. Why do you select a specific field and its type?

3. Why are field values coded or compressed?

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4. What means are available to control integrity of fields?

5. How can possible missing field values be handled (nulls)?

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