In: Computer Science
What is an actor? What is their role in a system?
What is a walkthrough? What are the different roles played during a walk-through?
An actor in a computer system as defined by the Unified Modeling
Language (UML) is a user which plays a certain role in the system
and interacts with the subject. Actors can have many roles such as
human users, external hardware, or other subjects. Actors represent
many roles which are relevant to the specification or the operation
of the system.
A walk-through of a system is the process which is used to assess
the effectiveness of the system and also to achieve the desired
results and the outcomes. A walk-through of the system can also be
in the form of the peer review in which there is a team which goes
through the software product and uses it and asks questions and
comment about the possible errors and other problems. The different
roles played during a walk-through can be a customer, user,
developer, etc.