Microsoft SQL Server 버전
Community Technology Preview (beta release)
Released To Manufacturing; It is the original, released build version of the product, i.e. what you get on the DVD or when you download the ISO file from MSDN.
Cumulative Update; Cumulative updates contain the bug fixes and enhancements–up to that point in time–that have been added since the previous Service Pack release and will be contained in the next service pack release. Installation of the Cumulative Update is similar to the installation of a Service Pack. Cumulative Updates are not fully regression tested.
* Since January 27, 2016: Microsoft recommends ongoing, proactive installation of SQL Server CUs as they become available. SQL Server CUs are certified to the same levels as Service Packs, and should be installed with the same level of confidence.
Service Pack; much larger collection of hotfixes that have been fully regression tested. In some cases delivers product enhancements.
General Distribution Release; GDR fixes should not contain any of the CU updates.
Quick Fix Engineering; QFE updates include CU fixes.