ok,
the example of my question is like this
I have a database such as:
0001, 0002, 0003, 0004, 0005, 0006, 0007 and so on
and then I delete the no 0005
so the result after I delete the 0005, my database should be like this:
0001, 0002, 0003, 0004, 0006, 0007
and if I want to add a new...