Thank you to the many people who responded to my recent inquiry about the usefulness of DNA testing for finding ancestors. Several said that the more people being tested, the more likely you were to get some useful results. I know the results go into a database, but is it a national database or does each company have their own separate database? A national database would allow comparison with lots of other people. If each company keeps their own database, that would mean fewer test results get entered into it, and much less likelihood of finding a match. It would also mean that it would be important to pick a company with about the largest database you could find, or one that has tested a lot of people of the surname that interests you. If the databases are separate, can you surf them to determine how many people of your own surname are part of it? Cliff