Imperva's most valuable features are ease of use and log correlation. I also like the ability to trace activity from the host machine to the server access, the user details, and the exact query that they executed. If a database administrator or application process executes a query on the database, people know exactly what was executed, including all the variables. For example, it will tell you how many rows they were trying to select on which table, and you get the OS information, network details, IPs, and the user. That fine-grained auditing available on the platform makes life easier and helps explain anything happening in your database.