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Case Report Open Access
Most of the Users often would like to retain past versions of XML documents, for several reasons. Reason might be, those past versions may contain useful historical information. Second, various laws require that for data that appear in financial reports drawn from prior versions, that those versions be retained for a stated period of time . Retaining data or document have challenging part is to keep them in consistent state, that is preserving integrity of the data or document. To preserve integrity means to preserve the constraints such as identity, referential integrity, cardinality, & data type. This can be possible by implementing the concept temporal schema & temporal document which can vary over the valid as well as transaction time. We do this by just replacing schema with temporal schema & replacing document by temporal document which are upward compatible with conventional XML & conventional tools, which we are extended to support the temporal constraint.
Constraint, Referential integrity, Unique, Cardinality, Aerospace Engineering,Applied Electronics,Applied Sciences,Biomedical Engineering,Botany,Fluid Dynamics,Chromatography Techniques.