Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the
coverage of the most important and influential journals
to meet the needs of the global scientific community.
Inconsistency may arise when data are integrated together
with respect to a given set of integrity constraints. Many techniques can identify
inconsistent data by ad-hoc ways but inconsistent data can not be managed effectively.
To judge a query is rewritable, the work analyses whether the join graph for
the query is directed. Also, the work presents an approach for computing tuple
probabilities and a basic technique for query rewriting. The experiments use
the data and queries of the TPC-H specification to compare performance for degrees
of inconsistencies and the results show that the approach is effective and feasible.
