Revising a Search

Once you enter your initial search into a database, you may find you either got too much information or too little.

Broadening a search:

The best way to broaden a search is to think of other words that might be used to express your components and use OR to group them. For example: the Internet might also be called the Web, the Net, or WWW.

When using "OR" in a complex search, parentheses are used to group the "OR" words together in a set. Like algebra, the computer adds the OR results together, making a big set, before narrowing it to results that contain the word specified by AND.

Example: Are there security practices that can ensure privacy on the Internet?

(Internet OR net OR Web OR WWW) AND privacy AND (security OR encryption OR cryptography)

Narrowing a search:

There are three primary ways to narrow a search.

• Choose a narrower version of one of your components
• Use AND to add an additional concept to the topic
• Use NOT to exclude information about a particular topic

Examples:

• email AND privacy AND (security OR encryption OR cryptography)
• (Internet OR net OR Web OR WWW) AND privacy AND (security OR encryption OR cryptography) AND law
• (Internet OR net OR Web OR WWW) AND privacy AND (security OR encryption OR cryptography) NOT email