I should thank to Quontra Solutions Online Training Institute because of my trainer, Who teaches Qlikview , no one covers all topics with moderate fee structure. My Trainer is very helpful whenever I ask doubts at any time he helped me a lot. He Explained each and every minute things with out any irritation.I am really happy with the Qlikview course that Quontra Solutions offers. I suggest you and I Promise you its best training center to learn QlikView.