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Consider a relation schema r(A,B,C,D,E, F) and a set of functional dependencies {A-> BCD,BC->DE,B->D,D->A}
1) Compute a canonical cover for the above set of functional dependencies (show each step of your derivation with an explanation).
2)Compute the closure of AF and then determine whether or not AF is a candidate key.
Show the REA diagram using Microsoft Word
You are interested in analyzing some hard-to-obtain data from two separate databases. Each database contains n numerical values.
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In 250 - 300 words describe role of a database administrator and the tasks performed by this role. Also, describe why this role is important in Database Management.
Explain the role of a database administrator,the tasks performed by this role and why this role is important in Database Management.
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