John Zachman - Level Quotes

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Although many popular information systems planning methodologies, design approaches, and various tools and techniques do not preclude or are not inconsistent with enterprise-level analysis, few of them explicitly address or attempt to define enterprise architectures. Some examples of such popular offerings include

John Zachman

A significant observation regarding... architectural representations is that each is of a different nature than the others. They are not merely a set of representations, each of which is an increasing level of detail than the previous one. Level of detail is an independent variable, varying within each architectural representation.

John Zachman

The analytical approach employed by both BSP and BISC is "top down". The implications of the words "top down" are multiple and varied, and all apply to these analysis. For instance: Top down implies scope - that is, looking at the business as a whole as opposed to looking at pieces or subparts of it. Top down implies level of detail that is, looking at the highest level of summarization and then decomposing hierarchically to lower levels of detail as required. Top down implies perspective - that is, the perspective of the highest levels of management as opposed to the operational levels of management.

John Zachman