Database Management Systems, Quiz 2

January 2026 term, 12 Apr 2026, Set 1

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Question 1

+3−0Multiple correctInstructions

Consider the following Entity Relationship Diagram:

Choose the correct statement(s):

Select all that apply

Select all that apply.

• A.

  A project may exist on which no employee is currently working.

• B.

  There may exist a department which currently has no ongoing projects

• C.

  An employee might be working in more than one departments

• D.

  Every dependent depends on exactly one employee

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Consider the following Entity Relationship Diagram: Choose the correct statement(s): Consider the following Entity Relationship Diagram: Suppose we are trying to find a number 52 in a binary search tree. Which of the following probe sequences are possible while performing the search? Note: Each option shows a probe sequence for searching 52 in different binary search trees Consider the relation M(P,Q,R,S,T ) with the following functional dependencies: S → PQ PQR → ST The number of super keys of M is: