What is a cluster Key

technology databases

  1. The related columns of the tables are called the cluster key. The cluster key is indexed using a cluster index and its value is stored only once for multiple tables in the cluster.

  2. The related columns of the tables are called the cluster key. The cluster key is indexed using a b+ tree index and its value is stored only once for multiple tables in the cluster.

  3. The related columns of the tables are called the cluster key. The cluster key is indexed using a bitmap index and its value is stored only once for multiple tables in the cluster.

  4. The related columns of the tables are called the cluster key. The cluster key is indexed using a range index and its value is stored only once for multiple tables in the cluster.

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Correct Option: A

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