Which entity type represents an actual occurrence of an associated generalized entity in an archetype/instance pattern?

Introduction / Context:
Some designs explicitly model templates and their real occurrences. Distinguishing the instance from the template clarifies how data is populated and referenced.

Given Data / Assumptions:

• The question explicitly mentions an associated generalized entity (the template).
• We must name the entity that represents the actual occurrence.

Concept / Approach:
In the archetype/instance pattern, the archetype holds the generalized definition, while the instance represents the specific, real-world occurrence based on that definition.

Step-by-Step Solution:

Verification / Alternative check:
Examples: ContractType (archetype) vs. Contract (instance); ItemModel (archetype) vs. ItemSerial (instance).

Why Other Options Are Wrong:

• Supertype/subtype refer to inheritance specialization, not template-to-occurrence.
• Archetype is the template, not the occurrence.

Common Pitfalls:
Interchanging subtype with instance. A subtype is still a template-level specialization, whereas an instance is a concrete occurrence.

Final Answer:
Instance entity