Describe The Three Levels Of Data Abstraction?

1.	Describe The Three Levels Of Data Abstraction?
Answer» 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.

Answer»

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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