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What Are The Difference Between Physical And Logical Data Independence?

April 26, 2017Data difference Independence physical

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What Are The Difference Between Physical And Logical Data Independence?

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They are two different data abstract descriptions,and belong to two levels,namely, physical level and logical level.The physical level describes how the data are actually stored and describes complex low-level data structures in details;The logical level is a next-higher level than above,and describes the relationships among data using a simple structures.