Why do we need different levels of abstraction in
DBMS, explain with examples?
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Why do we need different levels of abstraction inDBMS, explain with examples?
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Data Abstraction is a process of hiding irrelevant details from the end user The data abstraction provides us with a different view and help in achieving data independence and to enhance the security of data Database systems consist of complicated data structures and relations To make it easier for users to access the data these complications are kept hidden and only the relevant part of the database is made accessible to the users through data abstraction There are three levels of data abstraction View
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