On 2011-05-16 13:03, Richard Smith wrote: > On May 16, 8:20 am, "Peter J. Seymour"<[email protected]> > wrote: > >> This set me wondering: How large do single trees get? So here is a >> challenge for you all, What is the largest single-tree gedcom you are >> aware of, does it consist of sensible data, and more to the point how >> large is it (File size in bytes and number of individuals, both metrics >> are needed please? > > If you google for 'BUELL001.GED' you'll find a large GEDCOM file by > someone called Matthew James Buell. It is about 3MB and contains > about 9,900 individuals, virtually all of whom are related. (It's a > descent from the biblical Adam, so clearly parts of it are dubious.) > I'm sure I've seen larger databases, though I'm not sure I can point > you to one at the moment. But this one seems to have become a fairly > standard test database for applications as it's large enough that it > can starts hitting scalability issues and diverse enough to include a > large range of dates and nationality. > > Richard Yes, almost all the entries are in one tree. Looked at in one way the file is an "interesting" account of the ancestry of a certain someone called Diana. I'm glad you pointed it out though, at 150 generations it breaks an assumed annotation limit in the Gendatam Suite reports. It also illustrates that sorting on date of birth is not very useful if most entries do not have it recorded. Peter