Work on it began at the IBM under the direction of
Work on it began at the IBM under the direction of E. F. Codd.   BETWEEN allows you match ranges of dates, strings, or numbers.  The DROP command allows you delete a data structure, while the TRUNCATE command allows you to delete all the data within the structure.  The Inner and Outer varieties of this language's most important command return either all matching elements, or non-matching elements.  This language also contains commands like WHERE and SELECT, as well as the aforementioned JOIN.  FTP, identify this computer language used to get data from a relational database.
Work on it began at the IBM under the direction of E. F. Codd.   
Structure Query Language (pronounced "sequel")