Final answer:
A version control system logs changes made to a database query, allowing for collaboration, tracking adjustments, and reverting changes if necessary.
Step-by-step explanation:
An example of how a version control system affects a change to a query could involve tracking the modifications made to a database query over time. For instance, if a developer adjusts the parameters of a SQL query to optimize performance, the version control system would log this change, allowing other team members to see who made the change, what the change was, and why it was made. Furthermore, if the change introduced an error or decrease in performance, the version control system would allow developers to revert to a previous version of the query, mitigating potential issues. Overall, version control systems play a crucial role in collaborating on projects, tracking changes, and maintaining the history of a project.