Suggestion for exam
question:
Question:
Describe
the four levels of requirements, goal- , domain-, product- and design-level.
Give one
example of each.
Answer appraisal:
Goal-level 2p
This is a business goal, something that a
company wants to achieve, often a gain in profit, cost reduction and
efficiency. These requirements are specified by the customer.
Goals at this level can often be verified.
Domain-level 2p
These are goals describing how the product
should work. They can specify requirements without specifying anything about
the product features. They explain the purpose of the traditional product
requirements. Goals at this level can often be verified.
Product-level 2p
Here goals concerning the actual functions and
features in the product are derived. Every input ought to have an output. These
goals are often easy to verify.
Design-level 2p
Details of the product interface such as the
appearance of the product and how it should react on user input.
Here we are a little uncertain of the extent of
the answer.
Example 0.5 points
each
For example a department store where the
manager wants to upgrade the cashier system.
Goal-level: The time spent by the customer in
queues shall be reduced by 10 %.
Domain-level: The product shall support the use
of existing system for inventory.
Product-level: The product shall have functions
for setting and changing prices.
Design-level: The system shall have an image of
the receipt as the customer gets it.