How is a vertical partitioning of a relation specified? How can a relation be put back together from a complete vertical partitioning?

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 Vertical partitioning involves creating tables with fewer columns and using additional tables to store the remaining columns. Normalization also involves this splitting of columns across tables, but vertical partitioning goes beyond that and partitions columns even when already normalized. The primary key is duplicated to allow the original table to be reconstructed. Using join operation to reconstruct them.



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