On 2011-08-12 14:59, zhang wrote:
You mean to indicate the attribute doesn't have a value?Yes, the field of a table can be null in DB. ---------- Zhang<bitwo...@qq.com>
I think you can declare new types for the types found in the database, like String, Integer, Date and so on. You could put additional useful methods on them and allow null as well.
-- /Jacob Carlborg
