This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A null represents the absence of a value. Indicate whether the statement is true or ... (Read 19 times)

cagreen833

  • Hero Member
  • *****
  • Posts: 544
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

brittrenee

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 7, 2018
Answer to Question 1

TRUE

Answer to Question 2

C


cagreen833

  • Member
  • Posts: 544
Reply 2 on: Jul 7, 2018
Excellent

ryansturges

  • Member
  • Posts: 338
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

The actions of Frzb and the Frizzled receptor protein show how embryonic development represents a ba The actions of Frzb and the Frizzled receptor protein show how embryonic development represents a ba
A recruiting poster for the “True Sons of Freedom” encouraged African Americans to enlist. In fact, A recruiting poster for the “True Sons of Freedom” encouraged African Americans to enlist. In fact,
Example of Reconciling a Bank Statement Example of Reconciling a Bank Statement
Gaussian surface in the absence of a dielectric Gaussian surface in the absence of a dielectric
The response of the lac operon in the absence of lactose The response of the lac operon in the absence of lactose
Video: Spermatogenesis Animation

For a complete list of videos, visit our video library