--- a
+++ b/docs/reference/schemas.md
@@ -0,0 +1,8 @@
+Table schemas define the tables and columns available to query in a
+dataset definition. The schema a dataset definition is written against
+determines which [backends](backends.md) it can be run inside.
+
+Below are a list of all table schemas available in ehrQL, together with
+the backends that support them.
+
+---8<-- 'includes/generated_docs/schemas.md'