Answering Queries using Views over Probabilistic XML: Complexity and Tractability
We study the complexity of query answering using views in a probabilistic XML setting, identifying large classes of XPath queries -- with child and descendant navigation and predicates -- for which there are efficient (PTime) algorithms. We consider this problem under the two possible semantics for...
| Main Authors: | , |
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| 格式: | Journal article |
| 语言: | English |
| 出版: |
2012
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Answering Queries using Views over Probabilistic XML: Complexity and Tractability
出版 2012
Journal article