Which of the following is a unary operator?
A) intersection
B) union
C) join
D) project

Name: Which of the following is a unary operator? A) intersection B) union C) join D) project
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Question

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A unary operator is an operator that takes a single operand, and in relational algebra, the project operator is a unary operator that selects a subset of attributes from a relation. The other operators listed (intersection, union, and join) are all binary operators that take two operands.

Which of the Following Is a Unary Operator