Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: SQL DBA would not feel it much useful

I bought this book because of its name. However after I read it, I am very disappointed.The reason is that1. It does not not cover in-depth experience/knowledge/troubleshooting. 2. The details of the table are like a plate of salad. So much NT and SQL Server basic stuff most of reader should already know and do not want read it. 3. The most disappointing part is that it does not touch real-world trouble from SQL DBA about backup and restore.