A succinct manual for those already familiar with the software package but need reminders now and then on some of the more arcane features. Harrison, who has written extensively about Oracle, explains all SQL commands, functions, operators, datatypes, and hints; the data definition language; export, import, and other utilities; Oracle Java; and other aspects. He lists Internet resources but includes no bibliography. Annotation c. Book News, Inc., Portland, OR (booknews.com)