U-X

In this section:


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URL

Uniform Resource Locator. The standard method to give the address to any Internet resource that is part of the Web. A URL looks like this: www.esri.com.


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Vector

A coordinate-based data structure commonly used to represent linear map features. Each linear feature is represented as x,y coordinates. Attributes are associated with the feature.


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Virtual Directory

A mapped location on the Web server to a physical path.


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Virtual Server

A grouping of one or more Spatial Servers into a single unit for administrative purposes. All of the following are Virtual Servers: Image, ArcMap, Feature, Metadata, Route, Geocode, Query, and Extract.


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Web Browser

Client software that is used to look at various kinds of Internet resources. The two most popular browsers are Netscape and Internet Explorer.


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Web Server

Software residing on a machine on the Internet that enables a Web site to run. When a Web browser makes a request for a file, the Web server locates the file and sends it back to the browser.


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Web Site

A site (location) on the World Wide Web.


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Widget

An element of a graphical user interface (GUI) that displays information to a user similar to a window. It provides a single interaction point for the direct manipulation of a given kind of data.


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WMS Service

Web Map Server allows for the use of data from different servers and is OGC compliant.


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XML

Extensible Markup Language. A World Wide Web standard used to create ArcXML.


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