Which of the following is NOT a function of versioning?

Versioning in databases, particularly in the context of geographic information systems (GIS), is primarily focused on managing changes to data over time and enabling multiple users to work on the same dataset concurrently without conflict. The functions associated with versioning include maintaining data history, allowing for tracking changes and modifications over a timeline, thus providing insights into how data evolves. Additionally, versioning facilitates simultaneous editing by multiple users, enabling them to make changes to their versions of data with the assurance that these changes can be merged or reconciled later.

However, enhancing data visualization is typically not a function of versioning. While versioning can indirectly support visualization by allowing users to view different states of the data over time—such as through a time slider or historical view—the enhancement of visualization itself is generally categorized under data representation and analysis rather than a core function of versioning. Visualization improvements tend to focus more on how the data is presented and less on the underlying processes that control data changes and access. Restricting access to data is usually managed through permissions and security protocols rather than by versioning techniques.

In summary, the correct choice emphasizes that versioning does not focus on enhancing data visualization, rather it is more about managing data changes and enabling collaborative workflows effectively.