It's hard to understand the data that given for quizzes but the teaching of professor Jana is really amazing.when i ask questions in discussion forums there was no tutor to help you out soon.

course was very interesting and was very thoroughly done , examples given were very good and helpful and I am very sure it will help in the long run!!

thank you.

it was a wonderful journey.

It's a great course for beginners, maybe being deep into two databases isn't fruitful enough. Web pages like kaggle.com can give more examples, more interesting and with current data

Great SQL course. I think the course overall is well structured and let me stretch myself week over week. It's a little difficult to write long query in SQL scratchpad though.

Very helpful and good course. The main focus is on the practice. There are many exercises which help to practice which in turn helps to understand the concept more.

The course is great , teradata login gave some problems thou , would have been good to have sample data and play around rather then a seperate login for teradata.

Great course with nicely designed practice questions. Would be even better if there is more help or sample answers provided for week 5--it is very tough!

Great course. Gave it 4 stars instead of 5 because I wish it had more video instruction as opposed to documents. I find videos a lot easier to learn on.

It's pretty good for entry-level SQL learners. However, to further improve, much time is required. Also, exercises provided are sometimes really weird.

Really good course for beginners, expected more video content. But overall the exercises and quizzes were very helpful in understanding the concepts.

This is one of the awesome course that I studied. A tutor is also very nice she has good knowledge of the subject and hands-on increases my knowledge

Challenging course going from very basic to quite complex SQL queries. Definitely recommended. The only downside are the repetitive technical issues.

great course.. only thing is answers to teradata exercises were not provided. So student cannot know whether he is writing correct sql statements

Very challenging, learned how to write very complex SQL queries. Be prepared to work. This is a 5 week course that took me 9 weeks to complete.

Great course. Enjoyed working through the exercises. Instructions were mostly clear. I feel like the joins could have been explained better.

The course advances rapidly, the later stages are particularly difficult and referring to sources other than this course becomes necessary.

The Content was great, the instructor exceptional, exercises really good. But there were some glitches while accessing Teradata Viewport.

Everything is good. But there was one problem - on 3/4 of my course disappeared Russian subtitles from lesson videos. That was sad. (

Extremely challenging course!!!!! But what fantastic instruction - very thorough and great practice exercises. Thank you, Jana. EJ

Very well taught, could be better if videos are made where Jane works on SQL examples....walking the student through her solution.

THERE ARE SOME EXERCISES THAT NEED TO BE CORRECTED SINCE THEY HAVE MISTAKES. SOME TIMES IT CAN TAKE HALF A DAY TO LOAN JUPYTER.

This course really improve and made me understand SQL indepth,even with little background knowledge.Thanks to Duke university

WEEK 5 EXERCISES IN TERADA COULD HAVE BEEN LESS TIME CONSUMING IF FEEDBACKS WERE GIVEN FOR EVERY STEPS THAT YOU ACCOPLISHED.

Great course overall! Some areas of course are too wordy which makes it hard to understand what professor is asking for.

The Teradata part is quite challenging and I think it would be better if there are more hints. I like the SQL part more.