Question #6: [10 points] John Smith wants to store information (names, addresses, de scrimptions of embarrassing moments, etc.) about the many ducks on his payroll. Not surprisingly, the volume of data compels him to buy a database system. To save money, he wants to buy one with the fewest possible features, and he plans to run it as a stand-alone application on his PC clone. Of course, John does not plan to share his list with anyone. Indicate which of the following DBMS features John should pay for; in each case, also indicate why John should (or should not) pay for that feature in the system he buys. 1. A security facility. 2. Concurrency control. 3. Crash recovery. 4. A view mechanism. 5. A query language Question #7: [8 points]