Computer Science, asked by anuraggmailcom4755, 1 year ago

Why do we need mappings between schema levels in dbms?

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Answered by Momoko

0

Mapping is mainly needed between schema level for 2 reasons; the mapping also help in different kind of transformation.A DBMS(database management system) Has three schema level given below; physical and internal schema.help to define how is data stored in the computer .
Hope it will help..!!!!
@momoko

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