A Data Manipulation Model: An Extension Of The Alpha Expression
Summary: Extends alpha-expression to support heterogeneous value-sets and aggregate operators within the relational calculus and target list. Also introduces imaginary tuples to simplify traditional data-processing descriptions and enable practical, efficient implementation. (summarized by gpt-5-nano on Feb 09 2026)
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| 8 | Extending the Data Base Relational Model to Capture More Meaning | 1979 | SIGMOD | 0.0015385917 |
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