A study on XML data exchange with query optimization
| Project/Area Number |
23500120
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Media informatics/Database
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | XML / データベース / 問合せ解析 / データ統合 / データ交換 / 確定解 / XPath / スキーママッピング |
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| Research Abstract |
Our aim is to develop fundamental technologies for utilizing an XML document conforming to a schema by transforming it to a document conforming to another schema. In this research, we have adopted XPath, a query language to XML documents, to represent a common structure of candidates for transformed XML documents, because such representation will be useful for query optimization. One of our contributions is several conditions where it can be decided efficiently whether a given XPath expression is really a common structure of a given set of candidate documents. We have also tackled other theoretical problems related to data exchange.
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Report
(4 results)
Research Products
(22 results)
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[Presentation] Typing XPath Subexpressions With Respect to an XML Schema2013
Author(s)
Yasunori Ishihara, Kenji Hashimoto, Atsushi Ohno, Takuji Morimoto and Toru Fujiwara
Organizer
Proceedings of the 5th International Conference on Advances in Databases, Knowledge, and Data Applications
Place of Presentation
Novotel Marques del Nervion (Seville, Spain)
Year and Date
2013-01-30
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