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WORLD WIDE WEB (SEARCH ENGINE (:pencil2: Programs that search documents…
WORLD WIDE WEB
SEARCH ENGINE
:pencil2: Programs that search documents for specified keywords and returns a list of the documents where the keywords were found.
:star:
eg
.
GOOGLE
,
YAHOO
,
BING
,
MSN
:silhouette: BY: Jonathon Fletcher (1993)
:check: As illustrated in the image on the right, the source of all search engine data is a
spider or crawler
, which automatically visits pages and indexes their contents.
How to access a search engine:question:
For users, a search engine is accessed through a
browser
on their computer, smartphone, tablet, or another device. Today, most new browsers use an
Omnibox
, which is a
text box
at the top of the browser that shows the address and is where you can also search on the Internet. You can also visit one of the
major search engines
home page to perform a search.
EACH HYPERTEXT PAGES NEED A UNIQUE ADDRESS (URL)
HYPERTEXT TRANSFER PROTOCOL (HTTP)
Applications protocol for distributive hypermedia information system
Client send the command to the server and then they reply back to the client. Eg;
defines how messages are formatted and transmitted
Since 1990
HYPERTEXT MARKUP LANGUAGE (HTML)
allow website creation.
Can be viewed by anyone that connected to the internet
How does it works ?
The text is then saved as a html file, and viewed through a browser, like
internet explorer
Writing your own HTML entails using tags correctly to create your vision
Eg;
short codes typed into a text-file by the site author
HTML is a Language, as it has code-words
BY: Ted Nelson
WEB SERVER
MANY SERVERS DEVELOP TO INTERNET INFORMATION SERVICES.
EG:
IT ALSO DEVELOPS TO THE SEARCH ENGINE AS PEOPLE NOWADAYS IS GETTING TO KNOW SOMETHING.
EG :
(YAHOO)
BY SIR TIM BERNERS-LEE (1990)
Berners-Lee is the director of the World Wide Web Consortium (W3C), which oversees the continued development of the Web. He is also the founder of the World Wide Web Foundation and is a senior researcher and holder of the founders chair at the MIT Computer Science and Artificial Intelligence Laboratory (CSAIL). He is a director of the Web Science Research Initiative (WSRI),[ and a member of the advisory board of the MIT Center for Collective Intelligence.In 2011, he was named as a member of the board of trustees of the Ford Foundation. He is a founder and president of the Open Data Institute.
JUMP TO ANOTHER PAGE BY CLICK TO THE COLORED WORD
BY: Jennevar Bush (1945)
eg.
associative indexing : whereby any item may be caused at will to select another immediately and automatically
The Process of TYING TWO THINGS OR MORE TOGETHER
The Principle that all packets on the internet should be treated equally
same speed
same priority
eg.
THROTTLED
: Intentionally given less bandwith and lower priority
