Wordpress has this nice function update_option(). it's a nice method to store some configurations for plug ins and icons. Have Joomla something similar to this? Or must i produce the table within the database to keep handful of options? (I'm speaking concerning the options that i'm not going user to have the ability to alternation in the after sales)

Back finish choices are built-in, you define them within the XML manifest for that extension. Here is a tutorial I dug on Google - http://www.vergegraphics.com/blog/joomla/58-extending-joomla-modules-with-parameters

Here's a listing of normal parameters - http://docs.joomla.org/Standard_parameter_types