You can find Balena's explanation at
http://www.amazon.com/exec/obidos/tg/detail/-/0735621721/104-1613950-6789558?v=glance
regarding "meaningless keys". (Belana is the author of
this Quote of the week)
There is another aspect of this problem I would like to mention.
Generally speaking, in your DB you can use data of another DB and this
data can be changed, deleted ( for example, SSN ) or a mistake can
occur (made by another person from another DB) in the data upon which
you act (or already have ), but don't know about these changes.
There is also a theoretical question when you design DB in which some
of the attributes were designed by another person. (Keys, meaning,
levels of abstraction,...)
Finally, is there a good specific solution for this "second hand
data"?
Received on Sun Aug 21 2005 - 16:32:19 CDT
