Feb 28, 2020 in DBMS
Q: Describe the three levels of data abstraction in DBMS?

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Feb 28, 2020
Physical level: The lowest level of abstraction describes how data are stored.

Logical level: The next higher level of abstraction, describes what data are stored in

database and what relationship among those data.

View level: The highest level of abstraction describes only part of entire database.
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