If you Google for a definition, you will no doubt find Venn diagrams with three circles (Venn diagrams are those figures you have seen with overlapping circles showing the relationships between things).  If you Google for “data science Venn diagram”, you will find some where folks went wild and have a dozen overlapping circles, but most have 3 overlapping circles (maybe because people who write definitions, such as academics, always seem to want to describe things as three-legged stools).

Recently Datanami had an interview with Jeffrey Ullman from Stanford who is a big name in computer science (particularly databases), and in 2020 won the Turing Award (think Nobel prize in computer science).  The article is short, but interesting, and he points out that everyone has their own diagram that emphasizes their domain!

You can find the article at this link.