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In many scenarios, such as emergency response or ad hoc collaboration, it is critical to reduce the overhead in integrating data. Here, the goal is often to rapidly integrate "enough" data to answer a specific question. Ideally, one could perform the entire process interactively under one unified interface: defining extractors and wrappers for sources, creating a mediated schema, and adding schema mappings - while seeing how these impact the integrated view of the data, and refining the design accordingly. Authors propose a novel Smart Copy and Paste (SCP) model and architecture for seamlessly combining the design-time and run-time aspects of data integration, and they describe an initial prototype, the CopyCat system.
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