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Background: Given the importance of customers as the most valuable assets of organizations, customer retention seems to be an essential, basic requirement for any organization. Banks are no exception to this rule. The competitive atmosphere within which electronic banking services are provided by different banks increases the necessity of customer retention. Methods: Being based on existing information technologies which allow one to collect data from organizations' databases, data mining introduces a powerful tool for the extraction of knowledge from huge amounts of data. In this research, the decision tree technique was applied to build a model incorporating this knowledge. Results:The results represent the characteristics of churned customers. Conclusions: Bank managers can identify churners in future using the results of decision tree. They should be provide some strategies for customers whose features are getting more likely to churner's features.

The relationship between the use of information technology (IT) and firm performance has been widely researched over recent years. However, there has been no well-founded empirical research on the role of intervening variables on such a relationship. The current paper aims to present an instrument to be used in such research and to study the role of two intervening variables including organizational infrastructures and business processes reengineering in such a relationship. Data from 200 car part manufacturers were gathered in a field survey. The empirical work indicated that constructed measures demonstrate the key psychometric properties including reliability and validity. The findings also demonstrate moderating effects of organizational infrastructures and mediating role of business processes reengineering on the relationship between the use of information technology and firm performance.