basically a system of Internet servers that support specially formatted documents. The documents are formatted in a markup language called HTML (HyperText Markup Language) that supports links to other documents, as well as graphics, audio, and video files.
the video shows how search engines work
There are four types:
– Directories
–Search engines
–Meta-search engines
–Yellow pages
What is web browser?
A web browser, or simply "browser," is an application used to access and view websites. Common web browsers include Microsoft Internet Explorer, Google Chrome, Mozilla Firefox, and Apple Safari.
A Boolean Query is a query that consists keywordsbut with logical operators(AND, OR, NOT).
How does searching work?
User Interface–Allows you to type a query and displays the results.
• Searcher –The engine searches the database for matching your query.
• Evaluator–The engine assigns scores to the retrieved information.
•Gatherer–The component that travels the WEB, and collects information.
•Indexer –The engine that categorizes the data collected by the gatherer
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