Originally developed by Object Technology International (OTI) and purchased by IBM for use by internal developers
Released to open-source community in 2001, managed by consortium
Eclipse Public License (EPL)
Based on IBM Common Public License (CPL) Consortium reorganized into independent not-for-profit corporation, the Eclipse Foundation, in early 2004
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The mercurial rise of social networking sites and user-generated content has rekindled users’ interest in accessing Web-based services on the move. That the mobile phone is an inherently personal device which is not only with us most of the time, but also contains a huge amount of personal data (contact lists of names and phone numbers, stored messages and emails etc.) makes it a logical extension for the social network and the host of other collaborative Web 2.0 applications gaining traction.
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Data visualisation has been defined as: The set of techniques used to turn a set of data into visual insight. It aims to give the data a meaningful representation by exploiting the powerful discerning capabilities of the human eye. Part 1 of this briefing paper will highlight some examples of new collaborative web services using Web 2.0 technologies which venture into the numeric data visualisation arena. These mashups allow researchers to upload and analyse their own data in ‘open’ and dynamic environments. Broadly speaking the numeric data being referred to could be micro-data (data about the individual), macro-data or country-level data, derived or summary data.
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This guide assumes that the reader has a basic understanding of what ArcGIS and the .Net framework is, as well as a rudimentary understanding of how object oriented programming works. For more information about .Net and object oriented programming, follow the links in Appendix B.

In order to program with ArcGIS there are two products that you will need to have installed on your computer. First, you must have either ArcGIS Desktop, ArcGIS ArcInfo or else have the ArcGIS Engine installed. Once these one of these are installed you will be able to run the code you compile in the ArcGIS environment. The other ArcGIS product you need is the Developer Tools for Microsoft.Net that provides access to the .Net framework and the functions that ESRI has made for .Net as well as the Developer tools that install an API for ArcObjects. It is also important to make sure that your software is up to date, which you can do by checking the ESRI website to see if there are updates or service packs for your software (this tutorial was written using ArcGIS 9.2 Service Pack1).
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As much as I would like people to believe that DotNetNuke was intentionally created as a premier open source project for the Microsoft platform, it is unfortunately not the case. As is true with many open source projects, the software was created with commercial intentions in mind, and only when it was discovered that its true purpose would not be realized was it reconsidered as an open source project.
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