Database Management System Question
Database Management System Question With Answer & Solution
Que. - Which, if any, of the two queries above will correctly (in SQL2) get the desired set of employee ID’s?
Que. - Suppose now that R(A,B:) and S(A,B:) are two relations with r and s tuples, respectively
(again, not necessarily distinct). If m is the number of (not necessarily distinct) tuples in the result of the SQL query: R intersect S; Then which of the following is the most restrictive, correct condition on the value of m?
(again, not necessarily distinct). If m is the number of (not necessarily distinct) tuples in the result of the SQL query: R intersect S; Then which of the following is the most restrictive, correct condition on the value of m?
Que. - Which of the following is not a key?
Que. - If a relation is in BCNF, then it is also in
Que. - The____condition allows a general predicate over the relations being joined.
Que. - Which of the join operations do not preserve non matched tuples?
Que. - The normal form which satisfies multivalued dependencies and which is in BCNF is
Que. - Which of the following is a tuple-generating dependencies?
Que. - The main task carried out in the __________ is to remove repeating attributes to separate tables.
Que. - Which forms has a relation that possesses data about an individual entity?
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