Software Engineering

19.7 
 Reviews and milestones (software implementation 
stage)
1. 
Software unit design walk-through
. Each software unit should undergo a peer 
review to ensure that its programmatic design satisfies the unit specification, and 
that the design documentation has been prepared according to documentation 
standards. Upon successful completion of a software unit design walk-through 
the software unit may proceed to the software code and testing effort.
2. 
Unit code walk-through
. The software implementation team conducts a code 
walk-through for each software unit. The purpose of the code walk-through is 
to ensure that the unit programmatic coding is complete. The unit code and test 
results should be reviewed to ensure that they properly achieve the specifications, 
that the source code documentation correctly reflects the “as-implemented” code, 
and that no Trojan horse
2
 or backdoors
3
 are present within the code.
2 
A 
Trojan horse
 is in reference to the story of the Trojan horse from a Greek legend. It is a malicious 
program disguised as a normal application. See 
http://netsecurity.about.com/cs/generalsecurity/g/
def_trojan.htm
3 
A 
backdoor
 is a secret or undocumented means of getting into a computer system. See 
http://netse-
curity.about.com/cs/generalsecurity/g/def_backdoor.htm

---