This topic contains a solution. Click here to go to the answer

Author Question: Write an SQL query on the table STUDENT that for each class lists the class and the number of ... (Read 59 times)

abern

  • Hero Member
  • *****
  • Posts: 533
Write an SQL query on the table STUDENT that for each class lists the class and the number of students in the class.
 
  What will be an ideal response?

Question 2

If A, B, C, and D are columns of the table whose composite primary key is A, Bwhile C and D are nonkey columnsthen B --> D is a transitive functional dependency.
 
  Indicate whether the statement is true or false



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Chou

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

SELECT class, COUNT()
FROM student
GROUP BY class;

Answer to Question 2

FALSE




abern

  • Member
  • Posts: 533
Reply 2 on: Jul 7, 2018
Great answer, keep it coming :)


patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

For a complete list of videos, visit our video library