Which concept models shared characteristics across several object types, enabling polymorphic processing?

• A. Object Explorer
• B. Interface
• C. Materialization
• D. Action Type

Answer: (B)

Shared contracts across different object types enable polymorphic processing. An interface defines a common set of operations that any implementing type must provide. Because multiple object types commit to that same contract, code can interact with them uniformly without caring about each type’s concrete details. This lets a single piece of logic handle diverse objects—any object that implements the interface can be processed in the same way.

Think of it like designing a workflow that can work with any data source as long as it offers standard methods like fetch or validate. The specific data source might be a database, a file, or a stream, but since each implements the same interface, your processing code can call the expected methods without special-casing each type.

An Object Explorer, in contrast, is a tool for examining objects rather than defining how different types share behavior. Materialization refers to turning a plan or schema into concrete data representations, not to cross-type behavior. An Action Type describes kinds of actions rather than a unifying contract for multiple object types.