Search engines What and how they work:
Search engines use it permanently, but many of us do not know what! And no how it works! Or even not know how important it is for the users of the Internet sites and the network Internet.
Let’s imagine that there is no such thing as a search engine like “Google” for example, which is the most famous search engine in the world, how will we search for anything we want on the Internet “Internet” ?? !!
Before answering this question, let us know what the search engine consists of:
The search engine is a program developed like any other program but the difference is that it was designed for one reason is to find all the documents stored in the database in the web, for example, if you want to search for anything you can type in the search engine search engine, On its servers to find what you are looking for, and this process bears parts of the second, according to the existing search word this is how it works simply.
The answer to our previous question is that we can not find anything without the search engine, especially since now there are billions of billions of web pages on the web. Imagine that you want to enter every website where you search for what you want. The biggest problem is that you should Try thousands of Domains to reach a specific site, so the search engines shortened the work of a very large and can not be measured, and through the databases that store any web page on the Web, which requires special servers and large sizes and high speeds to meet the needs of users faster Time.
Types of search engines:
Web search engines are divided into three sections:
1 – International search engines:
They are engines that search the whole web and have a great database. All the web pages are stored on their servers, known as web engines. The most famous of them is Google, which is one of the most popular search engines in the world. “Become a human advisor in anything you want, where you can ask him anything that comes to mind and will come quickly to you through the data stored in the form of a list of files presented to you quickly to find what you are looking for on the Web sites.
2 – Internal search engines:
These engines are in a small scope used to search the website of a company or organization, where the search is within its own network and through the data entered on the site, and give only what is related to the company information on the website or stored in the company database Just .
3 – Medium search engines:
These engines are linked to more than one website at a time so that these engines search within the sites associated with them only to search for the required fields and the most famous of these engines are “Dot org and Demoz.”
The most famous search engines in the world: