4.6. Hypersonic
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## 4.6. Hypersonic

Example 4.6. Example properties for Hypersonic

    kodo.ConnectionDriverName: org.hsqldb.jdbcDriver
    kodo.ConnectionURL: jdbc:hsqldb:DB_NAME

### 4.6.1. Known issues with Hypersonic

- Hypersonic does not properly support foreign key constraints.

- Hypersonic does not support pessimistic locking, so non-optimistic transactions will fail unless the `SimulateLocking` property is set for the kodo.jdbc.DBDictionary

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