A search engine is software, typically accessed on the Internet. It searches a database of information according to the user’s query.
The engine displays a list of results what the user is trying to find. At present time, there are many different search engines available on the Internet. Each search engines have their own abilities and features.
Archie was the first search engine. It was basically for searching the FTP files. Veronica was the first text-based search engine.
Today, the most popular and well-known search engine is Google. Other popular search engines include AOL, Ask.com, Baidu, Bing, and Yahoo.
In other words, a search engine is a web-based program that collects and organizes content from all over the internet.
Search Engine Components:
There are three basic components of a search engine as listed below:
- Web Crawler
- Search Interfaces
The another name of web crawler is spider or bots. It is a software component that gathers information.
All kind of information is stored in database. It consists of huge web resources.
Search interfaces acts an interface between user and the database. It provides help in searching through the database.
How to access a search engine ?
For users, a search engine is accessed through a browser on their computer, smartphone, tablet, or another device. At present time, most new browsers uses an omnibox.
It is a text box that shows the address and is where you can also search on the Internet. You can also visit to the major search engine’s home page to perform a search.
search engine working:
Usually, search engines contain millions and sometimes billions of page, many search engines not only search the pages but also display the results depending on their importance. Basically, that importance is commonly determined by using various algorithms.
The source of all search engine data is a spider or crawler, which automatically visits pages and indexes their contents.
After crawling the page, the data contained in the page is processed and indexed. Often, this can involve the steps below.
- Strip out stop words
- Record the remaining words in the page and the frequency they occur
- Record links to other pages
- Record information about any images, audio, and embedded media on the page
The data that is collected above used to rank the page. It is the primary method that a search engine uses to determine whether a page should be shown and what will be the order of doing that.
After processing of data has been completed, it will be divided into one or more files.
It will be moved to different computers, or loaded into memory where it can be accessed when a search is performed.
Do all search engines give the same results?
Not necessarily. Search engines use proprietary algorithms to index and correlate data, so every search engine has its own approach to finding what you’re trying to find.
Each search engine displays result of your query in a unique way.
What is the best search engine?
It can’t be said which one is better among the others. Many people may argue that Google’s search engine is the best and it is probably the most popular and well known.
The other popular search engine is Microsoft’s Bing search engine. It is used by many people. Bing does an excellent job in finding relevant information.
Yahoo is also other search engine. It is not quite as popular like others, still does an excellent job of searching for information.