# selection

> in relational algebra, unary operation that denotes a subset of a relation

**Wikidata**: [Q7447725](https://www.wikidata.org/wiki/Q7447725)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Selection_(relational_algebra))  
**Source**: https://4ort.xyz/entity/selection-q7447725


## References

1. Freebase Data Dumps. 2013