The document discusses search engines. It defines a search engine as software that searches the World Wide Web and presents results in a search engine results page. Examples provided are Google and Bing. Search engines are important because they filter the vast amount of information on the internet to provide relevant results quickly. There are different types of search engines including crawler-based like Google that use bots, directories that are human-curated, hybrids that combine both, and meta search engines that search multiple other engines.

1. Prepare by
Polara mayur
Bhalu lalji

2. What is Search Engine
The Father of the search engine is Jonathon
Fletcher
A web search engine is a software system
that is designed to search for information on
the World Wide Web.
The search results are generally presented in
a line of results often referred to as search
engine results pages (SERPs).

3. What is Search Engine
The information may be a mix of web
pages, images, and other types of files.
Examples
 Google
 Munax

5. How Search Engine Work

6. Importance of Search Engine
Search engines are important because with
over 8 billion web pages available, it would
be impossible to search for the information
that is specifically needed. This why
search engines are used to filter the
information that is on the internet and
transform it into results that each
individual can easily access and use within
the matter of seconds.

7. Types of Search Engines
 Crawler based search engine
 Directories
 Hybrid search engine
 Meta search engine

8. Crawler based search engine
These types of search engines use a
“spider”, “robots” or a “crawler” to search
the Internet. The crawler digs through
individual web pages, pulls out keywords
and then adds the pages to the search
engine's database.
Google and Ask.com are example of this
search engine

9. Directories
Directories are human powered search
engines. A website is submitted to the
directory and must be approved for
inclusion by editorial staff.
 Example
 DMOZ

10. Hybrids Search Engine
 Hybrids are a mix of crawlers and
directories. Sometimes, you have a choice
when you search whether to search the Web
or a directory. Other times, you may receive
both human powered results and crawler
results for the same search.
 Examples
 Google

11. Meta Search Engine
 Meta search engines are ones that search several other
search engines at once and combines the results into
one list. While you get more results with meta search
engines, the relevancy and quality of the results may
sometimes suffer.
 Examples
 Ixquick