I am using joomla 2.5, I am working on custom component of joomla . I have created the form in backend admin page. what i need is , i want to save the post data of form in
If you want to store params in the extension table, why not just use com_config for it?
See http://docs.joomla.org/J2.5:Developing_a_MVC_Component/Adding_configuration
Then you don't have to do anything besides creating the config.xml and adding a link to the config options in the toolbar.