|
NIST Enterprise Architecture Model (NIST EA Model) is a late-1980s reference model for enterprise architecture. It defines an enterprise architecture〔Chief Information Officer Council (2001) ''(A Practical Guide to Federal Enterprise Architecture Version 1.0 )'' Preface. February 2001.〕 by the interrelationship between an enterprise's business, information, and technology environments.〔The Chief Information Officers Council (1999). (Federal Enterprise Architecture Framework Version 1.1 ). September 1999.〕 Developed late-1980s by the National Institute of Standards and Technology (NIST) and others, the federal government of the United States promoted this reference model in the 1990s as the foundation for enterprise architectures of individual U.S. government agencies and in the overall federal enterprise architecture.〔 == Overview == The NIST Enterprise Architecture Model is a five-layered model for enterprise architecture, designed for organizing, planning, and building an integrated set of information and information technology architectures. The five layers are defined separately but are interrelated and interwoven.〔 The model defined the interrelation as follows:〔 * Business Architecture drives the information architecture * Information architecture prescribes the information systems architecture * Information systems architecture identifies the data architecture * Data Architecture suggests specific data delivery systems, and * Data Delivery Systems (Software, Hardware, Communications) support the data architecture. The hierarchy in the model is based on the notion that an organization operates a number of business functions, each function requires information from a number of source, and each of these sources may operation one or more operation systems, which in turn contain data organized and stored in any number of data systems.〔John O'Looney (2002). ''Wiring Governments: Challenges and Possibilities for Public Managers''. Greenwood Publishing Group. p.67.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「NIST Enterprise Architecture Model」の詳細全文を読む スポンサード リンク
|