Shadow Tables
Multiple uses for the same data
There are times when the same database table has multiple uses. For example a table holding zip codes may be used by the dealer, city, and listing tables holding the automobile dealers, cities and actual listings themselves. A dealer may have a different zip code than the listing so which zip code do we use? Since we are really talking about different paths between tables we need more than one instance of a table. In this case we would use a shadow table. A shadow table is simply another instance in the dGraph definition of a physical database table. With this new instance you can define a unique path to the primary table and as such pull out the data based on that new path.
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