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What is TRUE about three schema architecture?

12. What is TRUE about three schema architecture?

1. A specific database system is described by this framework.
2. Separating user applications from physical databases is also achieved by using the three-schema architecture.
3. Based on this architecture, there are three tiers. Three different categories are identified for the database.
4. All of the above

Answer: D) All of the above

Explanation:

Three schema architecture is –

1. A specific database system is described by this framework.
2. Separating user applications from physical databases is also achieved by using the three-schema architecture.
3. Based on this architecture, there are three tiers. Three different categories are identified for the database.