at a cell level by the meta-model outlined below. This diagram has been incorporated within the VA-EA to provide a symbolic representation of the metamodel it used, to describe the One-VA Enterprise Architecture and to build an EA Repository without the use of Commercial EA Repository Software. It was developed using an object oriented database within the Caliber-RM Software Product. Caliber-RM is intended to be used as a software configuration management tool; not as an EA repository. However, this tool permitted defining entities and relationships and for defining properties upon both entities and relationships, which made it sufficient for building an EA repository, considering the technology available in early 2003. The personal motivation in selecting this tool was that none of the commercial repository tools then available provided a true Zachman Framework representation, and were highly proprietary, making it difficult to incorporate components from other vendors or from open source. This diagram emphasizes several important interpretations of the Zachman Framework and its adaptation to information technology investment management. Progressing through the rows from top to bottom, one can trace-out the systems development life cycle (SDLC) which is a de facto standard across the Information Industry; The diagram emphasizes the importance of the often-neglected Zachman Row-Six (the Integrated, Operational Enterprise View). Representations in Zuech's interpretation of Zachman row-six consist, largely, of measurable service improvements and cost savings/avoidance that result from the business process and technology innovations that were developed across rows two through five. Row-six provides measured return on investment for Individual Projects and, potentially, for the entire investment portfolio. Without row-six the Framework only identifies sunk-cost, but the row-six ROI permits it to measure benefits and to be used in a continuous improvement process, capturing best practices and applying them back through row-two. Criticism While the Zachman Framework is widely discussed, its practical value has been questioned: The framework is purely speculative, non-empirical and based only on the conceptual argument that the "equivalency [between the architectural representations of the manufacturing and construction industries] would strengthen the argument that an analogous set of architectural representations is likely to be produced during the process of building any complex engineering product, including an information system" Practical feedback shows that the general idea of creating comprehensive descriptions of enterprises as suggested by the Zachman Framework is unrealistic In 2004 John Zachman admitted that the framework is theoretical and has never been fully implemented: "If