How to handle database table for form with more than thirty fields?

My question is not about code . Problem is I have to create form with more than 30 fields . I am thinking that I should create different tables for different portions of form . For Example one portion for sale orders and on portions for purchase orders and so on. But at the same time I feel that I will become complex when i will insert data or create relation with each other. So, my second thought is I should create only one table with 30 fields . But I don't know is it good practice? So, Please share your ideas

via Chebli Mohamed