[Home](./index.md) > [@datashaper/schema](./schema.md) > [ResourceSchema](./schema.resourceschema.md) > [sources](./schema.resourceschema.sources.md) ## ResourceSchema.sources property List of resources that underlie this resource. This gives us the ability to create hierarchical or linked structures to represent complex combinations. For example, a parent resource can have source tables, a workflow, and a table schema that all combine to create a fully-realized, strongly typed, and transformed output table. Entire Resource objects may be embedded here, or a string path to the Resource definition JSON. Signature: ```typescript sources?: (string | ResourceSchema)[]; ```