Common Table
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Common Tables for FAO survey
Question 0. 6: The 'AREAS table' (aretab) is used to store data on geographical areas within countries. There is no attempt to be complete in the description of the area - the only required field is the area name. If longitudes and latitudes are entered they should refer to a central point within the area, which can be used to plot areas on a map. The area size field is useful for the same purpose, but is not required. It is possible to enter whole countries or even larger geographic areas into the area table, but no attempt is made to build hierarchies between such areas.
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