4.2.3 Decision Table Testing

Question 1

Decision tables are used for testing the i… that specify how different c… result in d…

Answer 1

implementation of requirements
combinations of conditions
different outcomes.

Question 2

Decision tables are an effective way of recording c… , such as b…

Answer 2

complex logic
business rules.

Question 3

When creating decision tables, the “ “ and the r… of the “ “ are “d…“.

These form the r…

Answer 3

conditions
resulting actions
system
defined

rows of the table.

Question 4

Each column corresponds to a d… that defines a u… , along with the a…

Answer 4

decision rule
unique combination of conditions
associated actions.

Question 5

In limited-entry decision tables, all the values of the “c…“ and “ “ (except for i… ) are shown as B… (t… ).

Answer 5

conditions
actions
irrelevant or infeasible ones
Boolean values
true or false

Question 6

Alternatively, in extended-entry decision tables, some or all of the “c…“ and “ “ may also take on m… (ra… , eq… , dis… ).

Answer 6

conditions
actions
multiple values
ranges of numbers,
equivalence partitions,
discrete values

Question 7

Notations for conditions:
- T … means the “c…“ is “ “.
- F … means that the “c…“ is n…
- “-“ means that the “v…“ of the “ “ is “i…“ for the a…
- N/A means that the “c…“ is “ “ for a g…

Answer 7

• T (true)
  condition
  satisfied
• F (false)
  condition
  not satisfied.
• “-“
  value
  condition
  irrelevant
  action outcome.
• N/A
  condition
  infeasible
  given rule.

Question 8

For actions:
- X means that the “a…“ should “ “.
- blank means that the “a…“ should n…

• other notation m…

Answer 8

• action
  occur
• action
  not occur.

may be used.

Question 9

A full decision table has enough columns to cover every c…

Answer 9

combination of conditions.

Question 10

The table can be simplified by deleting columns containing infeasible c…

Answer 10

combinations of conditions.

Question 11

The table can also be minimized by merging columns in which some “c…“ don’t affect the “ “ , into a s…

Answer 11

conditions
outcome
single column.

Question 12

In decision table testing, the coverage items are the columns containing feasible c…

To achieve 100% coverage, test cases must exercise all these “ “.

Coverage is measured as the number of e… , divided by the total n… , and expressed as a “ “.

Answer 12

combinations of conditions.

columns

exercised columns
number of feasible columns
percentage.

Question 13

The strength of decision tables testing is that it provides a s… to identify all the c… , some of which might be o…

Answer 13

systematic approach
combinations of conditions,
otherwise overlooked.

Question 14

Decision table testing also helps to find any “g…“ or “ “ in the “r…“.

Answer 14

gaps
contradictions
requirements.

Question 15

If there are many conditions, exercising all the decision rules may be time “ “, since the n… grows “ “ with the number of “c…“.

In such a case, to reduce the number of “ “ that need to be exercised, a minimized d… or a r… may be “ “.

Answer 15

consuming
number of rules
exponentially
conditions

rules
decision table
risk-based approach
used