dcsimg
Main » TERM » S »

Search Engine Meaning & Definition

Search engines are programs that search documents for specific keywords and return a list of the documents where the keywords were found. A search engine is really a general class of programs; however, the term is often used to specifically describe systems like Google, Bing, and Yahoo! Search that enable users to search for documents, articles, web pages, and videos on the World Wide Web.

Web Search Engines

Typically, Web search engines work by sending out a spider to fetch as many documents as possible. Another program, called an indexer, then reads these documents and creates an index based on the words contained in each document. Each search engine uses a proprietary algorithm to create its indices such that, ideally, only meaningful results are returned for each query.

As many website owners rely on search engines to send traffic to their website, an entire industry has grown around the idea of optimizing Web content to improve placement in search engine results. Search engine optimization (SEO) uses keywords as appropriately and specifically as possible to make a web page more prominent.

Common Search Engines and Tools

In addition to Web search engines, other common types of search engines and software include the following:

Desktop Search Tool

A desktop search tool is a form of offline search that allows you to browse your computer for files rather than searching the Internet.

Metasearch Engine

A meta search engine queries other search engines and then combines the results that are received from all.

Blog Search Engine

Blog search engines search the blogosphere and only index and provide search results from blogs (Web logs).

Enterprise Search

There are also enterprise search tools for searching both structured and unstructured data to make better use of corporate data.

Recommended Reading: Webopedia's How Web Search Engines Work.










LATEST ARTICLES
Texting & Chat Abbreviations

From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top... Read More »

Huge List of Computer Certifications

Have you heard about a computer certification program but can't figure out if it's right for you? Use this handy list to help you decide. Read More »

STUDY GUIDES
Computer Architecture Study Guide

Computer architecture provides an introduction to system design basics for most computer science students. Read More »

Network Fundamentals Study Guide

Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »

The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »