Constraint-based Query Distribution Framework for an Integrated Global Schema [article]

Ahmad Kamran Malik, Muhammad Abdul Qadir, Nadeem Iftikhar, and Muhammad Usman
2010 arXiv   pre-print
Distributed heterogeneous data sources need to be queried uniformly using global schema. Query on global schema is reformulated so that it can be executed on local data sources. Constraints in global schema and mappings are used for source selection, query optimization,and querying partitioned and replicated data sources. The provided system is all XML-based which poses query in XML form, transforms, and integrates local results in an XML document. Contributions include the use of constraints
more » ... our existing global schema which help in source selection and query optimization, and a global query distribution framework for querying distributed heterogeneous data sources.
arXiv:1004.2155v1 fatcat:ypi2yeao6rdxzjrqmittndwwfm