code for edit or update

[eluser]Unknown[/eluser]
Hi
I am new to CI, Started practicing from 2 days. I have done the stuff required for inserting and retrieving values into db. and I am trying to update and delete the same values.

can anyone help me on providing CI code for updating and deleting values. I have gone through some code in some sites. I didn't understood the code can any one refer me tutorials regarding edit and delete.

Thanks in advance.