Computer Science · Database Management Systems
What is the fundamental distinction between a database schema and a database instance?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A schema refers to the actual data stored at a specific moment, while an instance is the rarely changing logical blueprint defining the structure.
- 2A schema manages simultaneous access by multiple users, while an instance hides the complexity of physical storage through multiple levels of abstraction.
- 3A schema is the rarely changing logical blueprint defining the database structure, whereas an instance is the frequently changing actual data stored at a specific moment.✓
- 4A schema translates high-level user queries into low-level instructions, while an instance acts as an intermediary between end users and physical storage.
Correct answer
A schema is the rarely changing logical blueprint defining the database structure, whereas an instance is the frequently changing actual data stored at a specific moment.
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