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
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
