Query Optimization Based on Data Provenance
Data Provenance is a key of evaluating authority and uncertainty in data query. Query process technology based on data provenance overcomes the shortcomings of traditional data integration on query quality and efficiency. This paper constructs a data model of heterogeneous data sources provenance, i.e. Semiring Provenance, based on tracing provenance of data origination and evolution. It’s proved to be effective in creating mapping between heterogeneous schemas and optimizing query quality and authority evaluation. Experiments using real data set show that our approach provides an effective and scalable solution for query optimization technology.
Wenya Tian and Linli Xu
L. Huang and H. B. Cheng, "Query Optimization Based on Data Provenance", Advanced Materials Research, Vol. 186, pp. 586-590, 2011