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近年来，国内外学者总结了ＭＩＳ、ＤＳＳ和ＥＳ等企业信息系统研制和应用中的经验教训，认为它们达不到预期效果的主要原因是：缺乏从企业战略高度来规划和设计信息系统，忽视了信息技术应用、信息系统开发与组织结构、人员、知识结构等的密切关联，由此提出了建立企业信息体系结构的设想。本论文分析了ＥＩＡ提出的深刻背景，在此基础上进一步明确了ＥＩＡ的概念，提出了ＥＩＡ五维模型和实现ＥＩＡ的六步骤十八过程的理论框架．目前信息系统的发展已十分复杂，这使得对于ＥＩＡ的研究不能仅局限于计算机技术方面的知识与技能，而应该广泛地从各学科领域汲取精华，如信息资源管理、全面质量管理、信息工程、企业过程重组等，以全面深刻地研究ＥＩＡ的内涵和外延．
In recent years, domestic and foreign scholars summed up the experience and lessons in the development and application of enterprise information systems such as MIS, DSS and ES. The main reasons that they failed to achieve the expected results are: lack of planning and design of information systems from the corporate strategic level, neglect The application of information technology, information system development and organizational structure, personnel, knowledge structure and other closely related to the proposed establishment of enterprise information architecture ideas. This thesis analyzes the profound background proposed by EIA, further clarifies the concept of EIA, and proposes the theoretical framework of EIA five-dimensional model and EIA six-step eighteen process. At present, the development of information system has been very complicated, which makes the research on EIA not limited to the knowledge and skills of computer technology, but should draw the essence from various disciplines, such as information resource management, total quality management, information engineering, Business process restructuring, etc., in order to fully and profoundly study the connotation and denotation of EIA.