For getting video titles and release dates by genre, why don't we simply create a table with genre as the partition key and video title and release date as the unique key ?
This way we can query the list by genre.
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Why is there a need to use cast function for DS220 Exercise 5.4 ?
Your question doesn't make sense to me so I was hoping you could provide a bit more context.
Specifically, what did you mean by "unique key"? Partition keys are unique identifiers of partitions in a table so you question is confusing. Cheers!
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