1. A method, performed in a computer, for synthesizing one or more relationships between concept definitions in a plurality of concept definitions, wherein each of the concept definitions comprises at least one of a plurality of attributes, the method comprising: providing a user interface comprising a web page that renders a view of data elements corresponding to an active content node in a domain of information, the active content node being associated with an active concept definition in the plurality of concept definitions; determining, based at least in part on input received via the user interface, whether any implicit relationships exist between the active concept definition and a first concept definition of the plurality of concept definitions, wherein an implicit relationship between the active concept definition and the first concept definition is determined to exist if the active concept definition and the first concept definition share at least one common attribute in the plurality of attributes; in response to determining that at least one implicit relationship exists between the active concept definition and the first concept definition, using the computer, synthesizing a previously unrecognized relationship between the active concept definition and the first concept definition; and generating a dimensional concept hierarchy based on dimensional concept relationships synthesized between the active concept definition and the plurality of concept definitions.