Can a column serve as both a primary key and a surrogate key in Caboodle?

In Caboodle Data Model Fundamentals, a column can serve as both a primary key and a surrogate key. A primary key uniquely identifies each record in a table, ensuring that no two rows can share the same key value. On the other hand, a surrogate key is an artificial key created to uniquely identify a record, often used when a natural primary key does not exist or is ineffective for this purpose.

Having a column function as both keys allows for flexibility and efficiency in database design. For example, a surrogate key can facilitate relationships between tables while maintaining integrity and ease of querying—especially when natural key values are complex or change frequently. This dual-purpose capability is particularly beneficial in the context of data warehousing, where data integrity, performance, and storage optimization are crucial.

The other options imply limitations or exclusions that do not align with the practical application of keys within the Caboodle framework, reinforcing that the dual-role of a column is valid and useful in various scenarios.