Latest RDBMS Aptitude Question SOLUTION: Q. Describe the three levels of data abstraction? A. The are three levels of abstraction: Physical level: The lowest level of abstraction describes how data are stored. Logical le

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Q. Describe the three levels of data abstraction?

A. The are three levels of abstraction:
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

Asked In RDBMS MAN (10 years ago)

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