What Is a GEDCOM?
Here is a good overview from Ancestry.com - A GEDCOM Primer. To read the entire article, just follow the hyperlink that follows the definition.
- Just What Is a GEDCOM?
- The term GEDCOM is an acronym, standing for Genealogy Electronic Data COMmunications. It is a data format standard that allows data from one genealogy computer program to be shared with and read by another genealogy computer program.
Ancestry.com - A GEDCOM Primer
http://www.ancestry.com/learn/library/article.aspx?article=5141
Definition of GEDCOM at Wikipedia.com
http://en.wikipedia.org/wiki/GEDCOM