The statement is false because Amazon Neptune is a fast, reliable, fully managed graph database service that is optimized for storing and navigating relationships. It is not designed for typical relational data structures managed by a relational database service (RDBMS) such as Amazon RDS or Amazon Aurora. For relational data structures, services like Amazon RDS or Amazon Aurora are more appropriate as they are optimized for such workloads. Amazon Neptune excels in use cases where relationships between data points are highly connected, such as social networking, recommendation engines, and fraud detection, which are different from the use cases best suited for relational databases.