DV_SYSTEM

Use system default. For integer and float values, this is zero. For date and varchar, this is an empty string. For pointer variables, an object will be created.

1

DV_NULL

Set to NULL for all nullable scalar types. For pointer variables, do not create an object.

2

DV_STRING

Set value to the string in associated DefaultString types. If the value is not a varchar, the string value must be convertible to the correct type.

3