# Canonical Source

> The requirement that each piece of knowledge have one authoritative definition rather than copies.

Record: `lex:canonical-source`
Kind: constraint
Layer: [Structural Core](https://banes-lab.com/records/layer/structural-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-canonical-source

## category

- [Core Modular Design](https://banes-lab.com/records/lex-category/core-modular-design.md)

## referenced-by

- [Do Not Repeat Yourself (DRY)](https://banes-lab.com/records/arch/duplicate-code.md)