Similar to regular inline defaults, you cannot explicitly unbind a sharable inline default from a column. Adaptive Server automatically unbinds or drops it from the column during drop table or alter table commands. When you drop or alter a table, Adaptive Server checks whether any inline defaults are shared with other columns. If they are, Adaptive Server unbinds the columns from the inline default object without dropping the shared defaulst.
If an inline default object is no longer used by any column, Adaptive Server drops it.