Cold backup is a backup of database when datafiles are not opened. Hot backup is a backup when datafiles are opend and operational.Suppose your database is in mount stage ( not shutdown ) and you take a backup then it is also a cold backup since datafiles are not opened.
First WHEN-VALIDATE-ITEM and then next KEY-NEXT-ITEM
Ram Mohan
Apr 8th, 2013
Always first "key_next_item" firs first and then "when_validate_item" fire,this is applicable for all levels .i.e form level,block level and item level