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    PODS
    2007
    ACM
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    Quasi-inverses of schema mappings
    14 years 4 months ago
    Quasi-inverses of schema mappings
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    Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...
    Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
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