# Oracle and PostgreSQL security
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This section includes pages about Oracle and PostgreSQL security-related topics.

**Topics**
+ [Oracle transparent data encryption and PostgreSQL encryption](chap-oracle-aurora-pg.security.encryption.md)
+ [Oracle and PostgreSQL roles](chap-oracle-aurora-pg.security.roles.md)
+ [Oracle database users and PostgreSQL users](chap-oracle-aurora-pg.security.users.md)