Sequence Structure: This is the single step or action included in the sequence process; it does not depend on the existence of other conditions. If the sequence structure does encounter a condition, it is taken into consideration.
Decision Structure: This occurs when two or more actions rely on the value of a specific condition. The condition is expanded and the necessary decisions are made.
Iteration/Repetition Structure: Certain conditions will only occur after specific conditions are executed. Iterative instructions help an analyst describe these specific cases.
