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A program written in Java and designed to be executed from within another application such as a Web browser. Unlike an application, applets cannot be executed directly from the operating system.

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Server-based software developed by ESRI gives you the ability to create, manage, and distribute GIS services over the Web to support desktop, mobile, and Web mapping applications.

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Server-based software developed by ESRI for delivering dynamic maps and GIS data and services via the Web. It provides a highly scalable framework for GIS Web publishing.

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ESRI object-based spatial data access engine implemented in several commercial relational database management systems using open standards and a true client/server architecture.

ArcSDE is chosen as a means of storing an extremely large number of features in a continuous database.

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A zone around a map feature measured in units of distance. It is used mainly for proximity analysis. There are capabilities of creating multiple buffers using different distances and using them for generating reports.

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A computer and/or application that allows Internet users to communicate with a server.

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A product created by Allaire Corporation that includes a server and a development toolset designed to integrate databases and Web pages. ColdFusion Web pages include elements written in ColdFusion Markup Language that simplify integration with databases.

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Pronounced demon or damon, a process that continuously runs in the background and performs a specified operation at predefined times or in response to certain events. The term daemon is a UNIX term. The Windows equivalent is a System Agent or service.

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Dynamic HTML. See HTML.

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A group of computers and devices on a network that are administered as a unit with common rules and procedures. Within the Internet, domains are defined by the Internet protocol (IP) address. All devices sharing a common part of the IP address are said to be in the same domain.

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A service that does not use tiles from a cache to display the map. Instead, the map is drawn by the server each time it is requested. These map services are used by highly focused Web applications to serve real-time data (for example, arrests, 911 calls, and so on).