questions 1 to 7. will rate ?? if all are answered

Review Questions 1. What is a view? 2. Which command creates a view? 3. What is a defining query? 4. What happens when a user retrieves data from a view? 5. What are three advantages of using views? 6. Which types of views cannot be updated? 7. Which command deletes a view? 8. Which command gives users access privileges to various portions of the database