In the Project Operation of Relational Algebra,when a Subset of Columns

question 52

True/False

In the project operation of relational algebra,when a subset of columns is retrieved and the resulting table contains duplicate rows,the project operator will automatically remove the duplicate rows.

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Definitions:

Need for Affiliation

The desire to form connections with others and be part of a group or community.

Need for Competence

An individual's intrinsic desire to be effective in dealing with the environment and to master complex tasks.

Intrinsic Motivation

A drive to perform an activity for its inherent satisfaction rather than for some separable outcome or external reward.

Need for Capability

The requirement for a person or organization to have the skills, resources, or abilities necessary to accomplish a task or realize a goal.