1. A method for performing an operation based on multidimensional data managed by a relational database management system, wherein the multidimensional data that is stored in the relational database includes a plurality of dimensions and at least one dimension of the plurality of dimensions includes a hierarchy having two or more levels of granularity, the method comprising the computer-implemented steps of: registering, with said relational database management system, metadata that defines a cube, wherein said metadata includes data that identifies that said cube is a solved cube; and data that indicates how to handle requests that involve said solved cube; receiving a request for an operation on said solved cube; and in response to said request, performing the steps of determining, based on said metadata, one or more operations to perform to fulfill said request, and performing said one or more operations.