How to test the code which maybe distroyed in the future ?

This method maybe useful for database.

  If I copy one, and name it as deletemeafter 20110701 then , this shall give a deadline to handle it.

This method maybe useful for code management

 If we handle same file in the development team, what shall we do? we shall commit code frenquntly or slowly, 

for example one week or one month? 

As we usually encounter lots of conflict when long time to commit, hence we shall commit it everyday, but record the

miletone  to make it as Phase.

The method to handle excel file.

 The method to handle team delivery.