perform a check using the :check key

(schema/check-fn-columns -tsch- {:status ’a}) => {}

check if columns are missing

check if a scope is valid

check if columns are valid

expand * keys into - keys

get defaults in the schema

collects the returning ids and columns

(->> (schema/get-returning -tsch- :*/data :cache) (map first)) => ’(:id :status :name :cache :time-created :time-updated)

gets the linked primary column

order keys given schema

creates an extended schema for use by spirit

checks if object is a schema

passes a function for use in reverse-ref-attr method to add additional params to schema