There is one universal database constant: No matter what, your database will change over time.
Service level agreements (SLAs) and user expectations, on the other hand, remain mostly the same: Application performance will not degrade significantly. Unfortunately, most tools are insufficient to enable database administrators (DBAs) to manage change and maintain database performance. Quest has a tool that can help — Benchmark Factory® for Databases, which enables DBAs to capture and replay live database workloads before and after database changes and scientifically determine whether the change is positive or negative.
databases do not degrade the user experience.