The literature provides a wide range of techniques to assess and improve the quality of data. Due to the diversity and complexity of these techniques, research has recently focused on defining methodologies that help the selection, customization, and application of data quality assessment and improvement techniques. The goal of this article is to provide a systematic and comparative description of such methodologies. Methodologies are compared along several dimensions, including the methodological phases and steps, the strategies and techniques, the data quality dimensions, the types of data, and, finally, the types of information systems addressed by each methodology. The article concludes with a summary description of each methodology

A fundamental result of the information technology (IT) and business performance literature is that IT is not a driver of performance per se. However, it can be associated with higher performance if accompanied by organizational change. The identification of the variables describing organizational change is still on-going work. This paper focuses on organizational absorptive capacity and analyses its effects on the relationship between IT and business performance in small and medium enterprises (SMEs). Organizational absorptive capacity measures the ability of an organization to complete a learning process. A significant learning effort is typically associated with IT, as it represents a complex technology. To cope with IT's complexity, implementation is typically incremental and is accompanied by a continuous integration effort of data and applications. The degree of integration of a company's information system (IS), called IS integration, is a proxy of IT maturity and quality. In this study, we explore the effect of IS integration on business performance through absorptive capacity, that is, we hypothesize that absorptive capacity has a mediation role between IS integration and business performance. The proposed research model is tested with data surveyed from 466 SMEs sited in Italy, for which exports constitute more than half of their revenues. Results indicate that organizational absorptive capacity has a mediation effect. Alternative models attributing to absorptive capacity a role different from mediation are found to be non-significant.

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Web mashups are a new generation of applications based on the "composition" of ready-to-use services. In different contexts, ranging from the consumer Web to Enterprise systems, the potential of this new technology is to make users evolve from passive receivers of applications to actors actively involved in the "creation of innovation". Enabling end users to self-define applications that satisfy their situational needs is emerging as an important new requirement. In this paper, we address the current lack of lightweight development processes and environments and discuss models, methods, and technologies that can make mashups a technology for end user development.

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