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Which of the following statement is true for the 3 level architecture?

Which of the following statement is true for the 3 level architecture?

(a)The physical schema should assist to locate the data stored on disk
(b)The logical view of the data provides the view of data for the user
(c)Data authorization can be specified for the physical schema
(d)Program/data independence is eliminated due to this architecture
(e)New data cannot be derived with the help of sub-schemas.

Dec 28 2017 Read more Less More

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