A key factor when deciding which release type(s) to import is the extent to which each release by supports required views of the terminology content. Table C.2-1 lists the views that may be required and indicates which release types support each of these views.
A snapshot view for the date of the most recent release.
A snapshot view for a specified snapshot date.
A delta view for the date range between the most recent release date and the immediately preceding release date.
A delta view for a specified date range.