Which of the Following Relational Algebra Commands or Combination of Commands

question 55

Multiple Choice

Which of the following relational algebra commands or combination of commands is capable of retrieving one or more rows of a relation?

• A) Select.
• B) Project.
• C) Join.
• D) Select and Project.
• E) Select, Project, and Join.

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Definitions:

Customization

The process of modifying products or services to meet individual customer preferences or requirements, often leading to greater customer satisfaction.

Water Desalinization

A process that removes minerals and salts from saline water to make it suitable for human consumption and irrigation.

Economic Advantage

A benefit or edge that allows an entity, such as a business or country, to outperform competitors or achieve superior economic outcomes.

Fracking

A method of extracting oil and natural gas from the earth by injecting high-pressure fluid into subterranean rocks to force open fissures.