5. A system in accordance with claim 4 wherein said limiting means repeatedly limits said WHEN CONDITION selecting means to time intervals during which said conditions are satisfied for said predetermined number of occurrences.
4. A system in accordance with claim 3 further comprising means for generating a graphic presentation for each of the retrieved attributes whereby a plurality of graphic presentations is generated, one each for each point in history satisfying the selected conditions, allowing visual comparison among said plurality of graphic presentations for identifying recurring trends relating to the historical market information.