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Insulation between conceptual and physical structures
It can be defined as:
1. The Database Administrator should be capable to vary the storage structures without affecting users' views.
2. The internal structure of the database should be unaffected by the varies to the physical aspects of the storage, like changing to a new storage device.
3. The DBA should be able to vary the conceptual structure of the database without affecting all users.
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Using SQL create a view RS for the relations R and S. The view consists of the columns A and D renamed as X and Y in that order. Insert a tuple into it. Show the contents of t
wh
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QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
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I need web security expert , website management Project Description: i want professional for the below . website management server management database management
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