Database Management System20805 marksThree-schema architecture layers
What is data independence? How three schema architecture ensures logical and physical data independence?
What is data independence? How three schema architecture ensures logical and physical data independence? [5]
Data independence is the ability to modify the schema definition at one level of the database system without affecting the schema definition at the next higher level. In simple terms, it means changes made to the structure or storage of data do not require changes to the application programs that...