On 26 Aug 2009, at 11:42am, Zhanjun You wrote:

>        I have read the article "
> http://www.sqlite.org/fileformat.html#journal_file_formats"; and "
> http://www.sqlite.org/fileformat.html#rollback_journal_method",but I  
> am even
> more confused, anyone have some sample code for  
> rollback_journal_method.

You do not handle rollbacks by calling functions yourself, you do it  
by issuing SQL commands.  Read

http://www.sqlite.org/lang_savepoint.html

ROLLBACK is a way to do something like 'undo' for SQL.  You cannot  
turn this functionality off and use it for your own purposes.

Simon.
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