I would like to know if SQLite proposes a update mechanism based on some delta file, to be clear for example an Oracle database can be synchronized with sql redo logs or sna
You need a custom solution. there is nothing built-in to SQLite to do this automatically.
Note that you can write a query that spans multiple databases. Using this you can update one database from data in another entirely within SQLite. You still need to put the logic in yourself though.
http://www.sqlite.org/lang_attach.html