Insert data in mysql with codeigniter in PHP

Question

Hi Friends..

Currently I'm working on a PHP project in which we use CodIgniter framework. I want to know how to data insert from front end(php) to back end(mysql) with codeigniter . Ex:-suppose we have four fields in a table in front end like as name, qualification, sex, address. I want to know how to insert value of these fields in MySql with codeigniter ? Please help me anyone ?

Thanks.