Author Question: Files that have been zipped take ________ storage space. A) less B) more C) equal amounts of ... (Read 63 times)

burchfield96

  • Hero Member
  • *****
  • Posts: 610
Files that have been zipped take ________ storage space.
 
  A) less
  B) more
  C) equal amounts of
  D) no amount of

Question 2

What is the purpose of a primary key?
 
  What will be an ideal response?



mk6555

  • Sr. Member
  • ****
  • Posts: 310
Answer to Question 1

A

Answer to Question 2

A primary key uniquely identifies a record. Each record represents a single person, place, thing, or event. The primary key identifies which person, place, thing, or event it is. It also speeds access to your data and is used to form relationships.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

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.

For a complete list of videos, visit our video library