"fourth normal form" meaning in All languages combined

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        "A stage in the normalization of a relational database in which a database is in Boyce-Codd normal form and all multi-valued dependencies are functional dependencies."
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        "(databases) A stage in the normalization of a relational database in which a database is in Boyce-Codd normal form and all multi-valued dependencies are functional dependencies."
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        "(databases) A stage in the normalization of a relational database in which a database is in Boyce-Codd normal form and all multi-valued dependencies are functional dependencies."
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