GEDCOM File - Review and Use
Aviad Ben Izhak
Background and review
GEDCOM is the acronym for GEnealogical Data COMmunication, a protocol for data transfer between different genealogical software i.e., the data is imported from one software to another.
Each genealogical software has its own database structure, but the basic requirement of all genealogical software is the ability to import and export files using one common format – the GEDCOM format.
As anything else in the computer world, “homogenous” data transfer between software has its challenges. The different software save data using different methods and sometimes, issues arise when the data is “translated” from one software into another. Sometimes data held by software A is not supported by software B and therefore, will not be transferred altogether.
It is important to note that this format supports a variety of languages, so it enables saving, for example, surnames and first names in many languages – when the data is transferred in each of the languages in which it was written.
Use – what is it good for?
The most important use is backup. Backup assures all the information gathered is safely guarded. The need for backup can arise when there is damage to the computer, a serious error in the genealogy that requires retrieving previous versions, a need or will to move to another software, a need to connect associates to a research, and more.
Sharing – please bear in mind that most popular genealogical softwares are commercial and therefore, operate based on business considerations. A large number of researchers, trying to avoid dependency on commercial bodies, upload the information they gathered to non-commercial sites, such as ANU - Museum of the Jewish People, Wikitree, Jewish Gen, etc.
Uploading data online requires a few clarifications:
On one hand, uploading data online can expose information and some software events cause changes to the family tree. On the other hand, bringing the information to light usually generates a breakthrough. Remarks and additions of online users, as well as additional information that connects using this link, significantly contributes to the information gathered. You can never know who holds information and of what type. The undersigned encountered endless cases when “pieces of the puzzle” that were still missing following thorough research, were solved within minutes by an external body that shared their information online. In other words, it can be a case of ‘wisdom of the crowds.’
The way to enjoy all worlds is by saving the family tree on an independent software, isolated from the net, and uploading it online periodically, using some shared software. Such method enables full control over the information and prevents unwanted changes and additions, while allowing feedback and receiving additional information from other shared software users. In addition, just by uploading the information online, the entire body of users of the online tree can learn and acquire new knowledge from your research. Uploading a “private” family tree with a few thousands of names significantly contributes, directly and indirectly, to creating thousands of family ties. Please remember this method (using a personal software and uploading the information online periodically) somewhat doubles the work and requires constant updates of both family trees.
Summary and recommendations
For anybody engaged in genealogy, a GEDCOM file is a must, with great and even critical importance.
It is extremely important to frequently backup the data, based on the frequency and scope of changes made to the family tree. Furthermore, make sure you keep a backup away from the computer used for ongoing activity, on a cloud or somewhere distant.
It is highly recommended and important to publish family trees online, to enrich the private tree and the entire net community.
It is also recommended to upload family trees to non-commercial websites, to avoid dependency on business considerations.
The author
Aviad Ben Izhak (Lieutenant-Colonel), former commander of the Academy of Computing and Information Systems at the IDF (“Mamram”). Expert in building genealogical trees and family ancestry. Experienced in building family trees of thousands of people.
Aviad is a Geni curator – among the few in Israel who are certified to manage the world Geni genealogical tree.
Aviad is the founder of Yedaat – Genealogy and Family Trees.
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