Step 1: Separation of identifying information (identifiers) from content

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When PopData receives a new data file, a limited data validation is carried out and then identifiers used for linkage are separated from content. All information is stored in PopData’s highly-secure “Red Zone” with the content data stored separately from the identifying data.  Both data sets have a common Record ID (a generated number unique to each record) applied to them so that the Linkage ID resulting from the linkage can be attached to the content data at the end of the linkage process. 

Page last revised: November 4, 2014