MyDiamo is the first comprehensive encryption freeware for MySQL. In MySQL, Database administrator must manage data itself within secure environment. To provide it, encryption is the best choice. Also, access control and auditing for encrypted data are important. But with MySQL, it is not easy to build secure environment. Modifying source codes or queries, managing user authorities are not hard to control. For them, MyDiamo can be the answer. MyDiamo does not need to change any source code or query. MyDiamo can be installed in DBMS transparently and operated seamlessly. MyDiamo builds secure environment by providing not only encryption functions, but access control and auditing. MyDiamo is freeware for non-profit and personal use. For individual database administrator, MyDiamo is the best freeware for MySQL.