What is the data physical and logical depedence?
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》》》》》》》It means we change the physical storage/level without affecting the conceptual or external view of the data.《《《《《
》》》》The new changes are absorbed by mapping techniques.《《《《《《
》》》》》》 Logical data independence is the ability to modify the logical schema without causing application program to be rewritten.《《《《《《
》》》》The new changes are absorbed by mapping techniques.《《《《《《
》》》》》》 Logical data independence is the ability to modify the logical schema without causing application program to be rewritten.《《《《《《
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