Question 23: Which of the following is true, with regards to Cassandra clustering columns

1. It is not mandatory to define
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Correct Answer: 5

Explanation: In a simple primary key, Apache Cassandra uses the first column name as the partition key. (Note that Cassandra can use multiple columns in the definition of a partition key.) In the music service's playlists table, id is the partition key. The remaining columns can be defined as clustering columns. In the playlists table below, the song_order is defined as the clustering column:

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