developed by Moshe Zloof of
IBM in 1975.
[Moshe M. Zloof, "Query By Example", AFIPS NCC 1975: 431-438].
[Moshe M. Zloof, "Query-by-Example: A Data Base Language", IBM
Systems Journal 16(4): 324-343, 1977].
["QBE/OBE: A Language for Office and Business Automation",
M.M. Zloof, Computer pp.13-22, May 1981].
(2001-03-25)