On software quality and engineering
sjenkin at pcug.org.au
Sat Nov 2 17:12:44 EST 2002
Simon Fowler wrote: [[Sat, 2 Nov 2002 10:42:35 +1100]]
> I think the difference with software is that it's not like a
> physical system - it doesn't wear out over time, it doesn't have an
> inevitable failure at some point in the future, even if it's perfect
> now. Software is either correct or it's not correct.
Software _does_ wear out over time. The term is 'bit rot'.
This is what Y2K was about.
Classes of bug/'defect' fixes:
- corrective [fix faulty operation. Doesnt meet a specification item]
- perfective [adding a feature]
- adaptive [adapting to a changed environment. Could be legistation, new O/S,
Steve Jenkin, Unix Sys Admin
PO Box 48, Kippax, ACT 2615
0412 786 915
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