If all of the referenced columns on that table exist
If all the source columns on the source table exist
In the future we may also want to compare source types against reference types. Further investigation to implement this properly is required since there are options for full/partial matches etc.
Closes #1. It now checks:
In the future we may also want to compare source types against reference types. Further investigation to implement this properly is required since there are options for full/partial matches etc.