SQL - Structured Query Language
The more and more I look at the body of work that is the W3C Schools, the more I am impressed.
I am not saying that they are the "oracle" (pun not intended) but they seem to have a lot of bases covered. SQL is just another case in question.
What W3C Schools say:
My interest in this was that I hd previously had a general interest in programming and migrated into database stuff. I was initially interested in dbase, as this was what I had read was the new best thing (Ashton Tate) and then Borland Delphi, Paradox and FoxPro.