There are some keywords, and some tables. And indexes. And rollback stuff and logging. And ANSI-compliant something. Then there are the statements, with parentheses and special characters. There's some collating order thing that is important.
You get a lot of data, and put it in a straight line (or maybe it's called a row, I don't remember). Then you line up your keys and set them on the tables. You can't have a lot of keys, because it would jeopardize the access rights for security. They get joined together somehow.
Data goes in, and you take it back out, but it still stays there unless you change it, or not. Then you can print it but that part is hard, because you have to put brakes on the pages.
I think there's more to it than that, though.