- Uniform Resource Locator: a string used to identify a resource
- A valid URL is one thst is a valid web address
- Defines an Internet address, protocol to be used and where the document is
- Consists of:
-
protocol (http, ftp, news...)
-
host (machine.institution.type_of_institution.country)
-
port (usually unnecessary)
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path directory where file resides
-
filename name of file
-
fragment position in file (optional)
protocol://host:port/path/filename#fragmentposition
http://www.w3c.org:8080/history/html/MarkUp.htm#chap2