McGraw-Hill OnlineMcGraw-Hill Higher EducationLearning Center
Student Center | Instructor Center | Information Center | Home
Life Long Learning
Data Files
The Buzz in IT
Ask the Author
Did You Know
Purchasing
Cool Web Sites
I-Witness
Interactive Companion
Did You Know
Crossword
Glossary
Group Activity #4
Retread Auto Database
Privacy
Cracked Companies
DBs & DBMSs
Personal Portals
Security Tracking
Mixed Quiz
Feedback
Help Center


I-Series Computing Concepts
Stephen Haag, University of Denver
Maeve Cummings, Pittsburg State University
Alan I Rea, Jr., Western Michigan University

Files And Databases

Did You Know

Today people must process more information than ever before. Databases help organize this information and apply it in various situations.

  • Databases help promote democracy. Uganda created a registered voter database so each citizen uses only one voter ID card.
  • Databases are helping U.S. politicians. A database containing information about 130 million registered voters has grown to 100 gigabytes.
  • You don't have to be an expert to create an online database. Services provide databases you manage with Excel.
  • A survey of more than 500 database developers found that a third are designing wireless or mobile device applications.
  • Individuals and not businesses create most of the information. People create 500 times as much information with e-mail than all the Web pages in existence.
  • The DNA project has more than ________ bits of data -- at least twice the contents of the U.S. Library of Congress.

The DNA project has more than a quintillion bits of data -- more than twice the contents of the U.S. Library of Congress.

A quintillion is a trillion million. That's a number far beyond what any of us can imagine. The DNA project isn’t the only one amassing large amounts of data. The Internet Archive collects copies of all Web pages and stores the information in a large digital library.

The Internet Archive has over 100 terabytes of Web pages alone. In contrast, all of the books and other information in the Library of Congress amount to only 20 terabytes of data. Your favorite radio station only has about 8 terabytes of data (15,000 hours of music).





McGraw-Hill/Irwin