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- HyperSQL (embedded)
- MariaDB
- MySQL
- Oracle
- PostgreSQL
Either Oracle, MariaDB, PostgreSLQ, or HyperSQL is recommended over MySQL. While Oracle, MariaDB, PostgreSQL, and HyperSQL all perform well, MariaDB MariaDB has been found to have better backup and restore workflows than the embedded HyperSQL. If you do not plan on clustering the CTP database and you have sufficient space, however, HyperSQL is still a good choice.
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