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. Author manuscript; available in PMC: 2014 Nov 4.
Published in final edited form as: Neuroinformatics. 2012 Oct;10(4):331–339. doi: 10.1007/s12021-012-9151-4

Figure 1. Schematic of NDAR Data Federation.

Figure 1

This image shows the basic steps involved in delivering data to a user from all of the repositories federated with NDAR. In step 1, a user asks for data from multiple sites. This is currently requires the user to point and click, but this will be replaced by a web services interface shortly. In step 2, NDAR checks both the NDAR data repository as well as the data in the other repositories to see what is available. In step 3, the data available to that user is assembled. For this example, the user has been approved to receive data from AGRE but not from IAN. In step 4, the data is returned to the user.