Paradigm mismatch is the problem when two different approaches are to be used at the same time. The most common case of this idiom is in between ObjectModeling and RelationalModeling.
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ArgumentsThatTheObjectRelationalImpedanceMismatchDoesNotExist
AvoidingImpedanceMismatch
DatabaseImpedanceMismatch
ImpedanceMismatch
ObjectRelationalImpedanceMismatch
ObjectRelationalImpedanceMismatchDoesNotExist
ObjectRelationalImpedanceMismatchLinks
RelationalHostLanguageImpedanceMismatch
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Also related: MixingParadigms