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    Answers and rating deltas for
    Can all SQL queries be represented in Relational Algebra, Domain and Tuple relational calculus
| Author | Votes | Δ | 
|---|---|---|
| Erwin Smout | 3 | +1.65 | 
| nvogel | 2 | +0.15 | 
| Tegiri Nenashi | 1 | -1.90 | 
| Randy | -1 | -1.34 | 
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