Chapter Contents Back Next Link to Main Table of Contents

green rule

Types of Searches

Once you have selected a database, you should determine how that database can be searched.

There are two basic types of searches. Each database may use a slight variation or combination of these types:

  • keyword search 
  • controlled vocabulary search (subject)

A keyword search allows you to search for any word you choose. For instance, the Factiva database can search for any word in the headline, initial paragraph,  full text of articles or author field. 

Factiva database screen


Some databases use a specific list of terms called controlled vocabulary to organize the database's contents by subject. Databases with controlled vocabulary use very specific terms for concepts when searching by subject. In order to retrieve relevant information, it is useful for the user to be aware of this special terminology.

The example below is from the ERIC Database. Note the different term used for "abused children". 

ERIC database screen


Most databases allow you to search both ways: 
  • by subject, using controlled vocabulary
  • by keyword, using words that you choose

green rule

Chapter Contents Back Next Link to Main Table of Contents

Adapted with permission from Oasis, San Francisco State University http://oasis.sfsu.edu


Comments, Questions or Feedback?
Reference and Instruction Homepage | Library ReSEARCH Station | University Homepage

For more information contact: derickson@csuchico.edu