After spending the last few weeks understanding the basics of Unity’s DOTS, I created a Blog Post explain the General programming terms that form the foundations of DOTS.
If you are getting started with Unity’s Data Oriented Technology Stack (DOTS), or trying to wrap your head around all the terminology , I invite you to read the complete Article over here.
And if you find any errata, have some feedback, or questions, leave a comment over here 
Hope this proves useful!