A framework of annotation-based query process over inconsistent data
Aihua Wu · Journal of Shanghai, Maritime University · 2013
To mark out inconsistent data from query results acurrately in the scope of functional dependency,a framework named annotation-based query answer over inconsistent data is developed using the methods of query rewriting.The framework is a middleware between RDBMS and users,which distinguishes incredible data from credible ones in data source and query results with annotations,so as to avoid information loss.The framework can translate any traditional SQL queries into a set of SQL queries which can return query answers with annotations,and the query is answered by existing RDBMS.The framework can be easily embedded into the existing database application system,and users need not have to master a new query language.The experimental results show that the framework has not only overwhelming advantage against related works in information preservation,but also almost the same time performance with traditional queries.