A 
for a specified snapshot date.
Notes
- A is generated by filtering a
so that it only includes the most recent version of each 
as at a specified date. - Access to a
is essential for data entry. However, it is also useful to be able to set alternative snapshot dates for some types of analysis. For example, to determine whether current and previous results of similar queries have been affected by more recent enhancements to the terminology.
Related Links
- Glossary
- retrospective snapshot view
- Release File Specification