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. 2005 Nov 8;4:28. doi: 10.1186/1476-072X-4-28

Figure 3.

Figure 3

Database tables and their linkages. This diagram shows how the three main tables in the HIV Prevention Services Database were linked, or related. CBOs are linked to the GEOGAREA and PROGRAM tables by CBO-ID. The GEOGAREA table contains one record per geographic unit per CBO. This table contains the FIPS codes necessary for linkage to a GIS (map) database.