In data partitioning, what does the term "sharding" refer to?
- Backing up data to secondary storage
- Distributing data across multiple servers based on a sharding key
- Encrypting data for secure storage
- Replicating data across multiple servers
In data partitioning, the term "sharding" refers to distributing data across multiple servers based on a sharding key. Sharding helps in horizontal scaling by distributing data subsets, or shards, across multiple servers, thereby improving scalability and performance of the database system.
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