Unformatted text preview: 4. What is logical and physical independence? 5. Provide an example of connectivity using Chen Notation and Crow’s Foot Notation. 6. What is the difference between a database and a table? 7. Why are entity integrity and referential integrity important in a database? 8. Define a primary key. 9. Define a foreign key. 10. Provide an example relational diagram detailing primary and foreign keys using two or more entities, and describe the relationships....
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- Spring '10
- Networking, Foreign key, Chen Notation