The foundation documents address the digital repository from two distinct perspectives. The TDR primarily focuses on the administrative context for building and managing an archive; the OAIS focuses on technological functions and processes. In relying on these two foundation documents, it is important to understand how they relate to each other. This illustration shows how Cornell mapped the OAIS model to the TDR framework. This creates a more comprehensive model for digital preservation planning and development that sets each digital archive within its full organizational context, and also allows the organization to consider organizational, legal, economic, technical, and implementation issues individually or in relevant combinations.