Thank you. That does give it perspective.
*Naomi Lee SMITH BLACK,* *Cartersville, GA.* AERNI, SUTTER, SMITH, GIFFORD, ZELUFF, WINGATE, BLACK, CARDER, RAWLS taphophilia, noun, from the Greek word taphos meaning grave; a love for funerals, graves, cemeteries www.LegacyFamilyTree.com On Fri, Mar 10, 2017 at 3:39 PM, Steve Hayes <hayes...@telkomsa.net> wrote: > On 10 Mar 2017 at 10:54, Naomi SMITH BLACK wrote: > > > Next question. Now that I am starting from scratch...what qualifies as a > > Master Source? Ex: 1920 US Federal Census > > > > I will be using many of these, but for different areas, such as Putnam > > County, Ohio and Monroe County, Michigan, etc. > > > > Would *each* of these be considered a Master Source? > > Different people deal with this in different ways. > > A lot will depend on which sources apply to your data, and how much > information you have from each source. > > For example, if you have a very large number of families from a small area, > you may want to make that small area (eg Putnam Country, Ohio) a master > source, but if you have family scattered over a wider area, you might want > to > make the master source the 1920 US Census, and put Putnam County into the > details. > > My own preference is the latter, but I still make exceptions for some > things. > > One reason for my preference is database architecture, which is a bit > technical, but still worth considering. > > Legacy is a relational database, and one of the rules of relational > database > is to avoid duplication. If you make Putnam County Ohio and Monroe County > Michigan your master sources, then you have to enter the 1920 US Census > twice, and more if there are other counties. All those entries take up > space > on your disk. > > There are 3,141 counties in the United States. If you had 2 people in each > in > the 1920 Census, that would be 3141 Master Sources and 6282 detail sources. > If, however, you lump the entries for the 1920 Census into one master > source, > that's 3140 master source records. > > But if your people are distributed over 5 counties, then 5 Master sources > might be better. > > > -- > Steve Hayes > E-mail: sha...@dunelm.org.uk > Blog: http://khanya.wordpress.com > Web: http://www.khanya.org.za/stevesig.htm > Phone: 083-342-3563 or 012-333-6727 > Fax: 086-548-2525 > > > > -- > > LegacyUserGroup mailing list > LegacyUserGroup@legacyusers.com > To manage your subscription and unsubscribe http://legacyusers.com/ > mailman/listinfo/legacyusergroup_legacyusers.com > Archives at: > http://www.mail-archive.com/legacyusergroup@legacyusers.com/ >
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