Database quiz thread

Welcome to the discussion about this lecture. Here you can ask questions or post feedback about this specific lecture.

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@ivan, the final quiz question might be not consistent enough. See the explanation of my opinion below :

Not sure why “NO SQL” database is not applicable to the mission critical finance app. I guess, it is supposed to have a “consistent” trait mentioned in the CAP theorem.
Maybe it should have “availability” trait given my understanding of “mission critical” is correct. It does not really matter if the database engine has SQL as a query language or not.

Here are some good examples :

  • dBase
  • Clipper
  • Fox Pro

All of them were used in financial applications and they do not have SQL (since it has not been invented or popularized yet back then)

The statement NO SQL == MongoDB is incorrect since it is not transitive. Meaning mongo is a NO SQL database but Not any NO SQL database is Mongo DB.

P.S. Here is a good book on databases to mention if you have not done so yet


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All good until now thanks for the course is really helpfull

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Thanks for these added details.
After that, I do think the 3rd quiz question should have been better precised: for instance, atomic updates needed or not? with excluding answers

Very helpful - thank you all.
Technology has come along way since I was in College, very enlightening, this digital world.

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