If two entities have a one-to-many relationship, how would this be represented in a data model?

In a one-to-many relationship between two entities in a data model, the correct representation involves a foreign key. When one entity (the "one" side) can be associated with multiple instances of another entity (the "many" side), the way to reflect this in a relational database is to use a foreign key in the "many" entity that references the primary key of the "one" entity. This establishes a direct link between the two entities, allowing the system to understand the relationship.

For instance, if you have a "Customer" entity and an "Order" entity, the relationship can be depicted as each customer can have multiple orders. The "Order" entity would include a foreign key that points back to the primary key of the "Customer" entity. This method is foundational in relational database design, ensuring data integrity and establishing clear relationships among tables.

The other choices provided do not accurately represent how the one-to-many relationship operates in database design. While an array or query might be used in programming for certain data manipulations, they do not serve as a clear representation of the relationship in a data model context. Additionally, using a spreadsheet format lacks the structured relational integrity that databases provide, and while a normalized database structure is crucial for reducing