Description of the illustration cncpt334.eps

This graphic shows a user entering a query. The query enters a dotted rectangle labeled "Oracle." Arrows branch up to a diamond labeled "Query is rewritten" and down to a rectangle labeled "Generate Plan." The diamond points to a rectangle labeled "Generate Plan." Both Generate Plan rectangles point to a set of justice scales labeled "Compare plan cost and pick the best." The scales point to a rectangle labeled "Query Results."