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

Author Question: Which is the primary key(s) in the following STUDENT_GRADE(StudentID, CourseID, Grade)? A) ... (Read 11 times)

serike

  • Hero Member
  • *****
  • Posts: 542
on: Jul 7, 2018
Which is the primary key(s) in the following STUDENT_GRADE(StudentID, CourseID, Grade)?
 
  A) STUDENT_GRADE
  B) StudentID
  C) CourseID
  D) StudentID, CourseID
  E) Grade

Question 2

Which of the following is an example of a horizontal-market application software?
 
  A) a software developed by the IRS for its own needs
  B) ArtRage, the iPad application
  C) AutoCad
  D) Microsoft Excel

Question 3

CPU speed is expressed in cycles called ________.
 
  A) hertz
  B) bytes
  C) bits
  D) pixels


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

l.stuut

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 7, 2018
Answer to Question 1

D
Explanation: D) The relation STUDENT_GRADE has a composite primary key.
CL

Answer to Question 2

Posted another one can you check that one too? Thanks.

Answer to Question 3

A


serike

  • Member
  • Posts: 542
Reply 2 on: Jul 7, 2018
YES! Correct, THANKS for helping me on my review

shewald78

  • Member
  • Posts: 340
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Everyone has one nostril that is larger than the other.

El Niño and areas of high marine primary production around the Galapagos Islands. Noti El Niño and areas of high marine primary production around the Galapagos Islands. Noti
A fossil leaf in low-grade coal A fossil leaf in low-grade coal
Illustration showing how the primary breast tumor metastasized through the lymphatic and blood vesse Illustration showing how the primary breast tumor metastasized through the lymphatic and blood vesse
When checking a coil-on-plug (COP) assembly, check that the primary and secondary wiring looks ... When checking a coil-on-plug (COP) assembly, check that the primary and secondary wiring looks ...
Primary material used for HEADERS Primary material used for HEADERS
Grade 11 Chemistry Grade 11 Chemistry
Video: Subunits of DNA And Semi Conservative Replication

For a complete list of videos, visit our video library