Author Question: A null represents the absence of a value. Indicate whether the statement is true or ... (Read 55 times)

cagreen833 · **on:** Jul 7, 2018

A null represents the absence of a value.

Indicate whether the statement is true or false

Question 2

Which best describes the function of the following code fragment?IF EXISTS(SELECT FROM StudentCourseWHERE StudentKey=StudentKeyAND CourseKey=CourseKey)

A) It checks to see if the student exists
B) It checks to see if the course exists
C) It checks to see if there is a record in StudentCourse in which the StudentKey and CourseKey match the parameters passed in by the user
D) None of the above