Abstract: Embodiments are directed to data processing. A plurality of fact objects and a plurality of attribute objects may be provided such that each of the attribute objects may be associated with one or more fact objects. A fact key may be generated for each of the plurality of fact objects based on information associated with each fact object. Attribute objects associated with each of the plurality of fact objects may be determined based on attribute information associated with each fact object. An attribute key for each of the one or more attribute objects may be generated based on the attribute information. The attribute keys and a plurality of fact keys may be stored at a plurality of storage locations in a data catalog such that each storage location corresponds to one of the plurality of fact keys.