The present invention extends to methods, systems, and computer program products of user-interface architecture for manipulating business models. Embodiments of the invention facilitate efficient generation and extension of business related software applications, including commingled data-centric applications that represent both data elements and business logic in metadata. Modules of the user-interface architecture permit users to enter commands through common metaphors and wizards that abstract underlying (and more complex) modeling commands and data formats from users. The user-interface architecture can automatically search for existing models to provide and extend business related functionality.