Description: This entity represents the spatial feature class table of generalized U.S. Census Metropolitan Statistical Areas (MSA) boundary geography (U.S. Census Bureau) using the World Geodetic System (WGS) 1984 projection. This is a standard projection used in cartography, geodesy, and navigation. The latest revision for WGS84 (or WGS 1984), which was established in 1984, was in 2004. Separate projection tables are necessary due to the ArcGIS limitation that there be a single geometry/geography type column per table.