Migrate data to Hyper-Converged Database (HCD)

Hyper-Converged Database (HCD) uses several solutions for migrating data from other databases:

Use DataStax Bulk Loader (DSBulk) to load and unload CSV or JSON data in and out of the HCD database.
The CQL shell COPY TO command mirrors what the PostgreSQL RDBMS uses for file/export import.

You can use the CQL shell COPY command to read CSV data to HCD and write CSV data from HCD to a file system. Typically, an RDBMS has unload utilities for writing table data to a file system.
The sstableloader provides the ability to bulk load external data into a cluster.

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