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Results tagged with relational-calculus
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user 113908
-1
votes
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answers
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Intuition for a projection in tuple relational calculus
Let's have a relation $R = (name, surname, age)$. I want to obtain a new relation with only the $name$ attribute. In relational algebra I would simply do $\Pi_{\mathrm{name}}(R)$ but in relational cal …
1
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0
answers
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Division in tuple relational calculus
$ \newcommand{\Set}[2]{%
\{\, #1 \mid #2 \, \}%
}$
I've been trying to find how to express relational division operation in tuple relational calculus. The only thing I found is this presentation whe …
- 127
0
votes
0
answers
994
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Is it possible to convert any relational algebra expression into a relational calculus expre...
Let's for the sake of simplicity only focus on tuple relational calculus.
Every relational algebra query can be broken down into the 5 atomic operations - projection, selection, set union, set differe …
- 127