Relational Algebra¶

Binary Operators¶

∪ set union
∩ set intersection
- set difference
⨯ carthesian product

Unary Operators¶

π projection
σ restriction
ρ rename

Joins¶

⋈ natural join
θ-join & equijoin
⋉ & ⋊ semijoin
▷ antijoin
÷ division