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The purpose of this paper is to explore the relationship between some implementation variables and implementation performance of ERP system. DeLone and MacLean(1992) surveyed 180 articles attempting to measure information systems success and proposed an analysis framework, composed of six dimensions, for assessing the ERP performance in the post-implementation stage. The purpose of this study is to explore the impact of the integration ability of an ERP system, the readiness of each department of a firm and the support which ERP vendors can provide on the performance of a firm. This study chooses Tatung Company which adopted ERP systems in 2000 as the research object, and conducts a survey to realize how these three variables affect the performance after ERP implementation. Of 100 copies of questionnaires issued, a total of 35 valid copies returned with 63% response rate. By correlation and regression analysis, all three hypotheses proposed by this study are supported. Thus, integration ability of ERP systems, readiness of each department and supportive ability of ERP vendors all have positive relationships with the performance of ERP system. Through questionnaire survey, analyzed by PLS(partial least square) of Multivariate Analysis, based on 25 effective questionnaires, this research verify factors of 「Consultant Competence」,「Organizational Factors」,「Project Factors」,「Technical Factors」.
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