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An independent database is a system that permits ___ modifications on one level without affecting the ___ on the next level up

2. An independent database is a system that permits __________ modifications on one level without affecting the ____________ on the next level up.

1. Instance
2. Schema
3. Both a and b
4. None

Answer: B) Schema

Explanation:

An independent database is a system that permits schema modifications on one level without affecting the schema on the next level up.