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JSON compatibilityApplications that rely on JSON data can interact with the relational and non-relational data that is stored in HCL OneDB™ databases.
JSON data shardingYou can shard data with HCL OneDB™. Documents from a collection or rows from a table can be sharded across a cluster of database servers, reducing the number of documents or rows and the size of the index for the database of each server. When you shard data across multiple database servers, you also distribute performance across hardware. As your database grows in size, you can scale up by adding more shard servers to your shard cluster.
Shard-cluster definitions for distributing dataA cluster of shard servers uses a definition to distribute data across shard servers.

Shard-cluster definitions for distributing data

A cluster of shard servers uses a definition to distribute data across shard servers.

You must create a shard-cluster definition to distribute data across the shard servers. The definition contains the following information:

The HCL OneDB™ Enterprise Replication group name of each participating shard server.
The name of the database and collection or table that is distributed across the shard servers of a shard cluster.
The field or column that is used as a shard key for distributing data. Shard key values determine which shard server a document or row is stored on.
The sharding method by which documents or rows are distributed to specific shard servers. The sharding method is either a hash-based or expression-based.