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searching for Lossless-Join Decomposition 2 found (5 total)

alternate case: lossless-Join Decomposition

View (SQL) (920 words) [view diff] no match in snippet view article

become much more difficult. Views can make it easier to create lossless join decomposition. Just as rows in a base table lack any defined ordering, rows
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complete. A decomposition of R into (X, Y) and (X, R − Y) is a lossless-join decomposition if and only if X  ↠ {\displaystyle \twoheadrightarrow }  Y holds