Ensuring Query Compatibility with Evolving XML Schemas

Details Ensuring Query Compatibility with Evolving XML Schemas Ensuring Query Compatibility with Evolving XML Schemas

2008-11-26

arxiv.org/abs/0811.4324v1

Computer Science

Programming Languages

Scientific paper

During the life cycle of an XML application, both schemas and queries may change from one version to another. Schema evolutions may affect query results and potentially the validity of produced data. Nowadays, a challenge is to assess and accommodate the impact of theses changes in rapidly evolving XML applications. This article proposes a logical framework and tool for verifying forward/backward compatibility issues involving schemas and queries. First, it allows analyzing relations between schemas. Second, it allows XML designers to identify queries that must be reformulated in order to produce the expected results across successive schema versions. Third, it allows examining more precisely the impact of schema changes over queries, therefore facilitating their reformulation.

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