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This paper presents a new algebra for data preparation, processing, search and acquisition. This data management algebra is called CNS-algebra. The proposed data meta-model provides an efficient mathematical model for data gathering on the web. This unified data meta-model is suitable for data models on all levels: from high- or conceptual-level to low- or physical-level models. In the paper, we show how this model can be applied to processing XML documents and schemas.
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Nocedal et al. (2011) studied this question.
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