17. A method defined by claim 15 wherein the conceptual representation includes an interpretive portion, wherein the interpretive portion represents an operation on one or more aggregate data items, and wherein the operation on the one or more aggregate data items includes determining one or more of the following: (a) the number of data items comprising the one or more aggregate data items; (b) if the one or more aggregate data items is empty; (c) if the one or more aggregate data items includes a specific data item; (d) any other set operation.
17. A method defined by claim 15 wherein the conceptual representation includes an interpretive portion, wherein the interpretive portion represents an operation on one or more aggregate data items, and wherein the operation on the one or more aggregate data items includes determining one or more of the following: (a) the number of data items comprising the one or more aggregate data items; (b) if the one or more aggregate data items is empty; (c) if the one or more aggregate data items includes a specific data item; (d) any other set operation. 18. A method defined by claim 17 , wherein the step of generating information includes generating information from the interpretive portion.