Database structure - which one is better?

[eluser]umefarooq[/eluser]
ya here your another problem is solved have look on these two good tutorial about CI also it will help you for login system in CI

http://net.tutsplus.com/tutorials/php/co...er-basics/

http://net.tutsplus.com/tutorials/php/cr...deigniter/

hope both will help you more. if you need more help just put your question on forum or search in forum you will find your problems solutions.