What is a linked file?
A linked file is one that is created from 2 or more separate data sets. These files have common fields used to determine if a case is a match. A linked file might be set to retain only the cases that linked or it might retain all cases from both files, whether they linked or not. Alternatively, one could use one file as the base and then merge only those records that link from the second file. This is what we did.