Get the important parts of VANDF into a staging table / mart

[jrlegrand]

Problem Statement

VANDF data is in RxNorm.
https://www.nlm.nih.gov/research/umls/rxnorm/sourcereleasedocs/vandf.html

It's also available for download.
https://www.pbm.va.gov/NationalFormulary.asp

Assuming it's easier just to use RxNorm to get started, make a staging table out of that data - maybe even a mart if it's useful enough.

Learn more about the source data and what's missing from the RxNorm representation.

Criteria for Success

@saywurdson thinks the VANDF data is useful.

Additional Information