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

Returns

`#t`

ifsymbolnames 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`

ifsymbolnames 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`

.

An ordinal is an exact positive integer. The other types are standard Scheme.