The table helps speed up search engine performance because only the appropriate columns, instead of the documents themselves, need to be examined. A word or phrase relevant to the information the user is seeking, entered by the user to tell the software how to identify the desired data. The database software then examines each record in the database for a match. Such matches, called hits , are selected because they contain the entered word or phrase. A search for documents containing one or more words specified by a user.
Links typically appear as highlighted or colored text when displayed in Web clients .
To reduce the server load that numerous users place place on critical resources, the server may be configured to perform automatic balancing between available computers. By passing off requests to alternating machines, the server can improve response time significantly. A metasearch engine is a Web search tool which which lets you access many different search engines from one site. Metasearch engines are classified as either CUSI or SUSI . When a popular server becomes to busy to support the server load , other sites may volunteer to run a copy of the same software and database on their own computers.