Inherited description: The default collation value used for this data type.
Note that if you specify a truncation length and also a VALUELIST then your truncation length must
be longer or equal to your longest VALUELIST value
Inherited description: Tests if the logical value %val, which is a string, is valid.
The validation is based on the class parameter settings used for the class attribute this data type is associated with.
In this case, MINLEN, MAXLEN, VALUELIST, and PATTERN.