Informatics Practices
What is data abstraction? What are the different levels of abstraction?
Relational Database
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Answer
Data abstraction is a process of hiding the implementation details (such as how the data is stored and maintained) and representing only the essential features to simplify user's interaction with the system.
The different levels of abstraction are:
- Physical/Internal level
- Logical/Conceptual level
- View level/External level
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