In database testing, what are the potential risks of using synthetic or fabricated test data?

Using synthetic or fabricated test data in database testing poses the potential risk of providing an inaccurate representation of real-world scenarios. Since synthetic data is generated based on predefined patterns or algorithms, it may not accurately reflect the complexity and variability of actual data. This can lead to overlooking critical issues and vulnerabilities that may arise in real-world usage scenarios, compromising the overall quality and reliability of the database system.