connecting and retrieving database data

[eluser]Unknown[/eluser]
hey everyone.i still can't get through in connecting and retrieving data from my database.
1)in my database.php config file,i configured the db name,username set to root and active group allowed as default (for now).
2)in the welcome.php controller file i loaded the db with:$this->load->database('default');
3)finally in my view page where i wish to display the db data,i typed:

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