Encyclopedia > Primary key

  Article Content

Primary key

In database design, a primary key is a value that can be used to look up a particular row in a table. Examples are names in a telephone book (to look up telephone numbers), words in a dictionary (to look up definitions), and Dewey Decimal Numbers (to look up books in a library).



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
1904

... War: Russian troops in Korea retreat toward Manchuria followed by 100,000 Japanese troops. April 30 - Louisiana Purchase Exposition World's Fair opens in Saint ...

 
 
 
This page was created in 25.3 ms