Have you ever wondered what a search engine is? By going to the Internet, reading news, or by e-mail, you use the services of a browser installed on your personal computer. However, he does not search the Internet independently, but with the help of special search engines.
Definition
So what is a search engine from the perspective of a system administrator? Generally speaking, this is a system designed to search for information. In more formal terms, this is a hardware-software complex designed to search for data on the Internet. There are enough interfaces for this purpose for every taste. Usually the user selects the most convenient interface and uses it all his life.
The search engine itself consists of a search robot that searches for information on sites; an indexer providing the fastest search and output of the highest quality result; and graphical user interface. Consider some popular information systems and their interfaces.
Search engine
As a graphical user interface, browsers provide user interaction with search engines. The very first browser that anyone who buys a computer on their own gets to know this Internet Explorer. However, usually no one lingers on it for a long time, because very often there are failures in its operation, delays in processing information, and search results do not always satisfy the interests of the user. Therefore, people usually start using search engines with a more convenient interface.
If you want to change your browser, be sure to consider using FireFox. Convenient and fast to use, rarely does anyone change it to other interfaces. Introduced in 2004, the freeware browser quickly gained popularity, but it still could not be compared with Google, which produces a browser and its own search engine. The only advantage is that rarely anyone writes viruses on FireFox.
The leader among browsers is considered to be the Google search engine. The most convenient interface, its own built-in search engine and a friendly user interface allow you to win the heart of the consumer from the first minute of working in this browser.
For mobile devices, Opera or OperaMini will be the best choice. The convenience of working with bookmarks allows the user to work much faster in this browser on the phone than with any other graphical interface.
IPS
Before starting to consider search engines on the Internet, let's understand the concept of what information retrieval system. In the general case, such an application can be called any application or interface that gives the user a search result in information storage systems and databases. Allocate 2 types of IPA.
- Documentary. Search in these systems is carried out not by the information itself, but by special indexed codes like libraries when they first look at the book’s card, and only then they find the book itself.
- Factographic. Here, the search is carried out in the same way, not by a specific file, but by some facts about it.
Leader
When speaking about information systems, one cannot fail to mention the leader among them. This is without a doubt a Google search engine. According to 2014 data, more than 68% of users prefer to use this particular search engine. Based on page indexing, this search engine contains over 60 trillion documents.
The story of Google began in 1996 at Stanford University as a training project for Larry Page and Sergey Brin. Their system is based on the OCD method, the so-called transparent management method, which has become the basis for the development of the company for many years.
What is Google from the point of view of the average user? This is convenient, and most importantly - a clean interface, without a bunch of ads on the main search page. A system of accounts that allows you to store data about pages viewed and bookmarks in virtual space, and it doesn’t matter which device you accessed. After Google bought out Android, using the account system, it became possible to integrate all of their devices into a single network.
Yandex
And how do they answer the question in Russia, what is a search engine? In our country, the development of Internet technologies also did not stand still. This can be seen in the development of users of a variety of browsers. So what is the Yandex search engine? In Russia there is a content search engine with many integrated functions, such as an Internet wallet (by the way, which is not supported by most popular online stores and services), a fairly good map service, though not comparable to Google. There is even an application that should show traffic jams, but, as often happens, a good idea turned into a farce, because traffic information has been updated for too long.
On top of that, the main search box is packed with news, weather and other gadgets that are absolutely unnecessary for someone who has gone online to find, for example, his favorite song.
Caution virus
It would seem, what harm can a search engine do? However, there is one IPS that is nothing more than a pest. She is called Webalta. Here are some of its features, and you yourself decide what the Webalta search engine is.
Its main feature is that it does not ask the user for installation permission. If the browser and Amigo search often comes with downloaded applications from the Internet, and during installation you can simply uncheck the box (the main thing is to notice in time that you are prompted to install something other than what you downloaded), then this system itself is registered as the start page in your browser. Moreover, removing it from there is a problem even for advanced users.
What is the Webalta Start Page? This is a lot of "useful" news worthy of the first pages of the yellow press - all the "true" stories from the world of stars and the like. Advertising on Webalta also deserves special mention. All kinds of means for losing weight, boosting muscles and men's health, drugs for all diseases, enlarging the female breast - these are undoubtedly useful links for every person. Never follow these links. You can easily catch the virus. And if you are lucky enough to avoid this, and you manage to order any "medicines and drugs", then be prepared to say goodbye to health.