usage record for a part in nodelist

[amoners]

We may create a table to track usage record of a part.

A basic design like below:

-- 1. create a table A to record usage record of a part. have such attributes.
----- 1.1 S/N (foreign key from part)
----- 1.2 recorder
----- 1.3 action
----- 1.4 status
----- 1.5 status
----- 1.6 date
-- 2. add a link to a part and point to page B.
-- 3. page B: query databases and show the usage record in a page. The SQL sentence may like this 'select * from A where S/N='SFP20151111' order by time', like 'allParts.php'
--4 . page C: use this page to add each operation of a part like 'edit/addPart.php'

so we can track a part like an express smoothly.