This is the best video I have seen over the years since it is very simple and concise and the fact that you can "see" the explanation by the drawings is fantastic!
Hello - please take a look at this video and let us know if it helps - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7dce3yHrrY0.html - please note since that video was created we have also added impact analysis and data lineage improvements as wel