DATABASE DEVICE, METHOD AND PROGRAM

摘要

Provided is a device for suppressing the leakage of confidential information in a database, and improving processing efficiency. A database device provided with a control means for controlling access to data in a database, wherein the control means is provided with: a means for receiving a database operation command from a user device, and subjecting data/and or metadata handled by the database operation command to a database operation or computation, with encrypted data and/or encrypted metadata as is in an encrypted state; and a means for receiving the same and subjecting unencrypted data and/or unencrypted metadata to a database operation or computation. In addition, the processing result therefrom is returned to the user device.