Database on joomla

Hi . I am looking for a database solution on joomla to implement the manufacturing process for a small company. The System would mainly have 4 units which would 1. Customers (Customer information) 2. Manufacturing Process (Stages of manufacturing and jobs details) and 3 Suppliers and 4. Accounting. All the 4 units should be connected in such way that reports can be generated from all the 4 units. Basically i am looking for a small erp system.