# Projection Tag

> A formal definition of the tag for a file that derives a read model from a stream of events, filed in a projections folder.

Record: `lexicon:projection-tag`
Kind: artifact
Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-projection-tag

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Event Tag](https://banes-lab.com/records/lexicon/event-tag.md) and before [Level Tag](https://banes-lab.com/records/lexicon/level-tag.md).

## Category

- [Domain Concerns](https://banes-lab.com/records/lexicon-category/domain-concerns.md)