Category:Relational algebra

**relational algebra**
	family of algebras used for modelling the data stored in relational databases, and defining queries on it
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	Wikipedia
Subclass of	algebra;
Discoverer or inventor	Edgar F. Codd;
Time of discovery or invention	June 1970;
Different from	relation algebra;
Authority file
	Q840540;
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Subcategories

This category has only the following subcategory.

N

NF2-eNF2 relations (92 F)

Media in category "Relational algebra"

The following 31 files are in this category, out of 31 total.

Full outer join symbol.svg 196 × 128; 16 KB
Leptrois Flag.png 5,000 × 3,000; 121 KB
Leptrois Flag.svg 5,000 × 3,000; 1 KB
Relational Algebra Aggregation Nesting.svg 512 × 280; 17 KB
Relational Algebra Aggregation Unnesting.svg 512 × 280; 17 KB
Relational Algebra Aggregation Windowing.svg 512 × 205; 23 KB
Relational Algebra Aggregation.svg 512 × 282; 13 KB
Relational Algebra Cartesian Division.svg 512 × 260; 10 KB
Relational Algebra Cartesian Product.svg 512 × 205; 9 KB
Relational Algebra Fixpoint.svg 512 × 531; 6 KB
Relational Algebra Join Equijoin.svg 512 × 221; 9 KB
Relational Algebra Join Lateral Join.svg 512 × 209; 11 KB
Relational Algebra Join Natural Join.svg 512 × 221; 10 KB
Relational Algebra Join Semijoin Inverse.svg 512 × 221; 10 KB
Relational Algebra Join Semijoin.svg 512 × 221; 9 KB
Relational Algebra Join Union Join.svg 512 × 156; 9 KB
Relational Algebra Join.svg 512 × 203; 9 KB
Relational Algebra Outer Join Full Outer Join.svg 512 × 204; 9 KB
Relational Algebra Outer Join Inner Join.svg 512 × 146; 9 KB
Relational Algebra Outer Join Left Outer Join.svg 512 × 175; 9 KB
Relational Algebra Outer Join Right Outer Join.svg 512 × 176; 9 KB
Relational Algebra Projection Extended.svg 512 × 281; 14 KB
Relational Algebra Set Theory Difference Inverse.svg 512 × 667; 14 KB
Relational Algebra Set Theory Difference.svg 512 × 667; 7 KB
Relational Algebra Set Theory Intersection.svg 512 × 667; 7 KB
Relational Algebra Set Theory Symmetric Difference.svg 512 × 667; 8 KB
Relational Algebra Set Theory Union.svg 512 × 667; 8 KB
Relational Algebra Single Table Identity.svg 512 × 606; 4 KB
Relational Algebra Single Table Projection Extended.svg 512 × 598; 6 KB
Relational Algebra Single Table Projection.svg 512 × 598; 5 KB
Relational Algebra Single Table Selection.svg 512 × 598; 5 KB