A dataset can be defined as which of the following?

A dataset is accurately described as an observable collection of data defined by a schema. This means that a dataset is organized according to a predefined structure that specifies how data should be collected, stored, and accessed. The schema not only dictates the type of data included but also defines the relationships and attributes of the data entities, making it easier to manage and analyze.

In the context of Adobe Experience Platform, datasets play a critical role in data collection and processing, ensuring that the data adheres to the necessary standards and structure for effective use in data analytics, machine learning, and customer experience management.

The other options don't capture the essence of what a dataset represents. An archived collection of unused data does not accurately reflect the active and organized nature of a dataset. A temporary data storage unit implies transient storage, while datasets are structured for ongoing analysis and use. Lastly, a visual representation of data relationships pertains more to data modeling and visualization rather than the fundamental definition of a dataset itself.