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What are the two statements regarding transaction?
The two statements regarding transaction of the form are:-
A) Begin transaction
B) End transaction
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
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Question 1 Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? Question 2 With a necessary example explain (i)
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In the architecture of a database system which external level used? In the architecture of a database system view external level used.
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