Final answer:
A schematic explains the structure and operation of a new or existing technology solution, showing system elements and their relationships, while an algorithm is a step-by-step procedure for tasks and a heuristic is a practical problem-solving method.
Step-by-step explanation:
A narrative or diagram that explains the structure and operation of a new or existing technology solution is called a schematic. Schematics are used to represent the elements of a system and the relationships between those elements in a clear and organized way. This is crucial for understanding how a technology works and for troubleshooting issues. On the other hand, an algorithm is a step-by-step procedure for carrying out a particular task or solving a problem, and a heuristic is a practical approach to problem solving that isn't guaranteed to be perfect but is sufficient for the immediate goals.