Strange characters added to the database

The strange characters you are referring to are part of the table prefix. This is configured with the variable $table_prefix in the file wp-config.php.

$table_prefix = 'wp_';

When migrating a WordPress installation and setting up a new wp-config.php file you have to make sure, the prefix stays exactly the same as in the former config file. Else all database tables have to be renamed accordingly.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)