# Database Schemas One of the complicated things in [[Databases]] land, and a source of pain when [[Schema Migration]] is involved. [[Database Schemas]] are a [[Category Theory|Category]], as described in [[Categorical Databases]]. There are a few interesting tools to clean up and migrate complex schemas, like: - [[dbt]] - based on [[Category Theory]] and [[Optics (FP)]]: [[Cambria]] ## Log [[2022-08-01 1]] - Created entry - Linked [[Cambria]]