Structural Independence

what is structural independence and why is it important ?

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It is the ability to make changes in the structure of the database without affecting the user’s ability to operate the data. It means that changes can be made to the file structure without having any impact on the practical application of the program’s ability of data accessibility. If there is no structural independence, then modifying or altering the file like adding a field or deleting a field would result in several applications become unworkable.