— Operation on base-table: supported-type? symbol

Returns #t if symbol names a type allowed as a column value by the implementation, and #f otherwise. At a minimum, an implementation must support the types integer, ordinal, symbol, string, and boolean.

— Operation on base-table: supported-key-type? symbol

Returns #t if symbol names a type allowed as a key value by the implementation, and #f otherwise. At a minimum, an implementation must support the types ordinal, and symbol.