Ethnologue http://www.ethnologue.com/
Joshua Project http://www.JoshuaProject.net
Global Status of Evangelical Christianity (IMB) http://imb.org/globalresearch/downloads.asp
Human Development Index http://hdr.undp.org/en/statistics/
Legatum Prosperity Index http://prosperity.com
Use of the same rules and abbreviations in creating data bases will aid in standardization and data communication with others. The following rules for naming data base fields are taken from the National Field Research Handbook by Bob Waymire, pages E-5 to E-6. An extensive list of data base field abbreviations is found in the same handbook on pages E-1 to E-4. Use these abbreviations before creating your own.
Outline:
GENERAL FIELD CODE RULES