Why do We Have Repeatable Read and Serializable Isolation Levels?

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[rustamgonezhukov]

I never could understand the differences from the articles, it's always seemed overcomplicated, but after this video it became clear. You definitely have a talent in explanation of complicated thing with simple words. thanks!

[robertkorth]

The simplest, shortest and clearest presentation of the topic i have found so far. Thank you.

[gagangupta]

One of the best videos - explaining the isolation levels. Just awesome !!

[rahimliparviz]

I have looked a several explation but yours is the simplest and the best! thanks!

[ivantang]

Isolation levels and the problems they solve so so so simply explained. I wished I can give this video a hundred thumbs up.

I couldn't understand the different scenarios that the various isolation levels prevent as explained in "Database System Concepts" by Abraham Silberschatz. After watching this video I totally get it.

[akrooma]

just WOW
got the idea super fast
don't stop!

[vivamedia]

This tutorial and explanation really helped me to understand this subject better. Thank you so much!

[VishalBansod]

Thanks for explaining with a real world example. It clicked immediately. Really awesome video!

[parthabhowmik]

That was a great explanation, thanks 😊

[dimasnaresh]

Your explanation is soooo good !! Thank you, you help me a lot

[albrix]

Thank you so much! Best video on the subject

[nc]

Wow! The best explanation I've ever seen

[mauricio.csouza]

Great video Kendra, and easy explanation!

[ameyapatil]

Lucid explanation - was very easy to follow this complex topic

[trungthinh]

You know what ! You are the best video even from all of video from courses

[stephenhe]

Thank you a lot for bringing us such a awesome video !!!

[javaspringdev]

Thanks ..waiting for a good video and found it. .it's spot on!

[arungowda]

Brings the question : how are isolation levels different from database locks?

[vikaskondapalli]

Can you please do a video on 1. two serializable transactions executing concurrently 2. A serializable and non-serializable transaction executing concurrently

[LokeshKumar]

So In range Lock both insert and Update will be blocked am I correct?