[eluser]keithics[/eluser]
MySQL is a relational database management system.
MyISAM/InnoDB - storage engine for the MySQL .
There is an error in your database config file.
system/application/config/database.php
$db['default']['hostname'] = "localhost";
$db['default']['username'] = "root";
$db['default']['password'] = ""; //default for xampp
$db['default']['database'] = "database_name_here";
$db['default']['dbdriver'] = "mysql";
$db['default']['dbprefix'] = "";
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = "";
$db['default']['char_set'] = "utf8";
$db['default']['dbcollat'] = "utf8_general_ci";