Hello, I was wondering about the use of nextJS. I see in the next-auto documentation that their "users" table always contains a "session" and "accounts" column, which refer to other columns. I don't really understand why this is important. Could someone please explain it to me?

(https://authjs.dev/getting-started/adapters/typeorm?_gl=1*w23cd0*_gcl_au*NDA1OTI3NzQzLjE3MTY0NTYxOTc.)