表间永久性联系不能控制不同工作区中【 】的联动，要实现联动功能，需要建立表之间的【 】。

Johnson Corp. had the following financial results for the fiscal 2004 year:

A．Current ratio

B．2.00

C．Quick ratio

D．1.25

E．Current liabilities

F．$100000

F．Inventory turnover

F．12

F．Gross profit %

F．25