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Relational Algebra Starter Quiz-1

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Question 1

What type of join is needed when you wish to include rows that do not have matching values?

Question 2

Which commands are used to control access over objects in relational database?

Question 3

Which of the following is a fundamental operation in relational algebra?

Question 4

For a database relation R (a, b, c, d) where the domains of a, b, c and d only include atomic values, only the following functional dependency and those that can be inferred from them hold:

a → c , b→ d

The relation is in?

Question 5

What will be the cardinality of the cross product of R X S?

Question 6

Which of the following key is used for implementing referential integrity?
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May 13GATE & PSU CS