In an SQL SELECT command, a SELECT clause with several attributes and the absence of a WHERE clause indicates a(n) ____.
A) relational Select operation
B) relational Project operation
C) combination of relational Select and Project operations
D) combination of relational Select, Project, and Join operations
E) None of the above.

Question

Quizplus · Accepted Answer

A SELECT clause with several attributes selects all the columns from the specified table. The absence of a WHERE clause indicates that there are no conditions to filter the data, and therefore, the SELECT clause with several attributes is equivalent to a relational Project operation. The Project operation returns a relation that includes only the specified attributes, and in this case, all the attributes from the specified table are included.

In an SQL SELECT Command, a SELECT Clause with Several