> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/api/guides/output-module/the-output-module-query-language/virtual-properties.md).

# Virtual properties

Collibra does not store virtual properties. It calculates them at runtime and dynamically evaluates the value of each property when the query executes. Virtual properties typically support hierarchical queries that show if the resource has children. Some examples are `hasTaxonomyChildren` and `hasChildForRelation`.