Optimizing SQL Queries over Text Databases

  title={Optimizing SQL Queries over Text Databases},
  author={Alpa Jain and AnHai Doan and Luis Gravano},
  journal={2008 IEEE 24th International Conference on Data Engineering},
Text documents often embed data that is structured in nature, and we can expose this structured data using information extraction technology. By processing a text database with information extraction systems, we can materialize a variety of structured "relations," over which we can then issue regular SQL queries. A key challenge to process SQL queries in this text-based scenario is efficiency: information extraction is time-consuming, so query processing strategies should minimize the number of… CONTINUE READING
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