Which of the following relational algebra commands or combination of commands is capable of retrieving a single cell value from the integrated result of two relations?
A) Select.
B) Project.
C) Join.
D) Select and Project.
E) Select, Project, and Join.

Question

Quizplus · Accepted Answer

Select, Project, and Join together can be used to retrieve a single cell value from the integrated result of two relations. Join combines the relations, Select filters rows based on a condition, and Project extracts specific columns, allowing for the retrieval of a single cell value.

Which of the Following Relational Algebra Commands or Combination of Commands