Microsoft Dynamics NAV Can not Connect to Database

hello all ;
i have fdb database then i need to use microsoft dynamic nav
(not classic not finsql)
i make backup then from finsql create new database then this database restored to the backup the problem this backup has user id and password when i need to open by microsoft dynamics nav it say the user id and password invalid i think this error may be due to nav using windows authentication and database use database authentication
please can any body help

thanks

Is your SQL Server installed with mixed mode?

then use sa and pwd to open the database…

thanks mohana

synchronization solve the problem