The ____ command within relational algebra takes a vertical subset of a table.
A) SELECT
B) DELETE
C) PROGRAM
D) PROJECT

Question

The ____ command within relational algebra takes a vertical subset of a table.​
A) ​SELECT
B) ​DELETE
C) ​PROGRAM
D) ​PROJECT

Quizplus · Accepted Answer

The PROJECT command within relational algebra is used to take a vertical subset of a table. It allows selecting specific columns from a table, thus reducing the number of attributes in the resulting relation. Therefore, option D is the correct answer. The SELECT command is used to select tuples from a relation based on a given condition. The DELETE command is used to delete tuples from a relation that meet a given condition. The PROGRAM command is not a valid command in relational algebra.

The ____ Command Within Relational Algebra Takes a Vertical Subset