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DATABASE SYSTEM CLASS: 1. Describe the GRANT statement and explain how it relates to security. What types of privileges may be granted? How are they

DATABASE SYSTEM CLASS:

1. Describe the GRANT statement and explain how it relates to security. What types of privileges may be granted? How are they revoked?

2. Write the SQL command to revoke user Stetson's privilege.

3. What are nulls? Which field cannot accept null values? Why?

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