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Common for both types of databases, is that the needed database schemas (including migration) are included in the service distribution tar-ball, in the 'sql' directory.

See the following in order to migrate from Derby to PostgreSQL.

Derby

For embedded Derby databases the JDBC driver of "org.apache.derby.jdbc.EmbeddedDriver" is used.

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The above example is for migrating the AuditTrail services database from version 3 to 4.

Migrate from Derby to PostgreSQL

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MigrateDerbyToPostgreSQL MigrateDerbyToPostgreSQL

Rough notes on migrating from Derby to PostgreSQL for most databases in the reference code. Assuming everything runs on Linux.

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