1. A system for managing data received from a plurality of sources, the system comprising: a system for obtaining a multi-dimensional set of data from each of the plurality of sources, each multi-dimensional set of data including a common data element; a system for generating a main multi-dimensional set of data based on a combination of the sets of data, the system for generating including: a system for obtaining a data value for the data element from each of the sets of data obtained from the plurality of sources; a system for determining whether a conflict exists between the obtained data values; a system for using a conflict rule to determine a main data value for the data element in the main multi-dimensional set of data when the conflict exists; a system for storing a derivation record for the main data value for the data element in the main multi-dimensional set of data, the derivation record including: the main data value, the data value received from each of the plurality of sources, and the conflict rule; a system for obtaining the stored derivation record; a system for modifying the conflict rule, which is stored in the derivation record; and a system for determining a new main data value using the modified conflict rule.