Representing and Querying Changes in Semistructured Data

  title={Representing and Querying Changes in Semistructured Data},
  author={Sudarshan S. Chawathe and Serge Abiteboul and Jennifer Widom},
Semistructured data may be irregular and incomplete and does not necessarily conform to a xed schema. As with structured data, it is often desirable to maintain a history of changes to data, and to query over both the data and the changes. Representing and querying changes in semistructured data is more di cult than in structured data due to the irregularity and lack of schema. We present a model for representing changes in semistructured data and a language for querying over these changes. We… CONTINUE READING
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