$7\mathrm{.}27$ What unique rules apply to drawing context diagrams?

$7\mathrm{.}28$ What are the steps in creating a decision table? How do you reduce the size and complexity of a decision table?

$7\mathrm{.}29$ What does the term limited entry mean in a decision table?

$7\mathrm{.}30$ What is the formula that is used to calculate the number of rules a decision table must cover?