The Delone and McLean Model of Information Systems success: A ten year update paper discusses the contributions made by a number of researchers during the first decade of their initial Model of Information System Success. The ten-year update paper tries to appreciate the independent research efforts made on the model while acknowledging the critics, validation, application and proposed enhancements to the original model.

A large number of studies have evaluated information systems in different organizations; most of these studies have attempted either to identify factors that influence the success of information systems, or investigate how to measure information system success. Given an estimate of about nearly 300 articles that made reference to or made use of the D&M Model it is paramount to evaluate the appropriateness of the D & M original model by examining its variables and scan the proposals that were submitted by different researchers and their contribution to the updated process.

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We will then attempt to determine whether the framework for IS success would be sufficient tool to measure the effectiveness of IS although we do acknowledge the effectiveness of six dimensions of the D&M success model which are interrelated rather than independent. Based on the independent research outcomes, Delone and McLean evaluated their initial model and proposed minor refinements to the updated model which include a series of recommendations to the current and future measurement of IS success in light of dramatic changes in IS practice, especially the advent and explosive growth of e-commerce.

Generally, most of these studies have focused on internal users and impacts of information systems without taking into account external users and the impacts on these systems. In a different approach, Delone and Mclean (1992) focused on the dependent variable that is information system success. Based on initial work by Shannon and Weaver (1949), and by Mason (1978), D & M's model 1992 (figure 1) below became the focus of further theoretical research especially in measuring IS/IT success.

In fact, the model itself became the topic of research more than a tool of measurement. When D&M present their model in 1992 they did not test it empirically. Since 1992, a number of studies have tried to understand the multidimensional relationships among the measures of IS success. Relationship between variables: The six dimensions of success are supposed to be interrelated rather than independent. This interrelated relationship was shown by both process and causal model. The following table shows the difference between these models.

Seddon and Kiew surveyed 104 users of a recently implemented, university accounting system and found significant relationships between "system quality" with "user satisfaction" and "individual impact," between "information quality" with "user satisfaction" and "individual impact," and between "user satisfaction" and "individual impact. "Rai et al. [38] performed a goodness-of-fit test on the entire D&M IS Success Model based on survey responses from 274 users of a university student IS. The study found that some goodness-of-fit indicators were significant but others were not.