* [https://technet.microsoft.com/en-us/library/cc645993%28v=sql.105%29.aspx#Enterprise_security Enterprise Security Features Supported by Microsoft SQL Server 2008 R2 Editions]
* [https://technet.microsoft.com/en-us/library/cc645993.aspx#Enterprise_security Security Features Supported by Microsoft SQL Server 2012 Editions]
* [http://msdn.microsoft.com/en-us/library/bb934049.aspx Understanding Transparent Data Encryption (TDE) (Microsoft)]
* [http://www.oracle.com/technology/obe/11gr1_db/security/tde/tde.htm Using Transparent Data Encryption in Oracle Database 11g]
* [http://www.oracle.com/technetwork/database/security/twp-transparent-data-encryption-bes-130696.pdf Oracle Transparent Data Encryption best practices]
* [http://www.oracle.com/technology/deploy/security/database-security/transparent-data-encryption/index.html TDE column encryption and TDE tablespace encryption in Oracle Database 11gR1]