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Database systems on ____ operate on different operating systems and use different application protocols, as well as different hardware

7. Database systems on ____ operate on different operating systems and use different application protocols, as well as different hardware.

1. Homogeneous DDB
2. Heterogeneous DDB
3. DDB
4. None of the above

Answer: B) Heterogeneous DDB

Explanation:

Database systems on heterogeneous DDB operate on different operating systems and use different application protocols, as well as different hardware.