DB class implements insert, update and delete methods
insert( table, fields )
This method allows to insert a single row into a table by passing the name of the table and the associative array that contains field and value
db::insert("user", array("name"=>"Mickey", "agency"=>"Disney") );
update( table, fields, where )
Update the value of the selected rows of the selected table
db::update("user", array("name"=>"Donald", "agency"=>"Disney"), "user_id=1" );
delete( table, where )
Delete selected rows
db::delete("user", "name='Donald'" );