Data-tier applications (DAC) is a new project type in Visual Studio that allows a developer to package Database objects, schemas, deployment requirements, etc. into a single package (DACPAC) - which we refer to as a "single unit of deployment".
Last Wiki Answer Submitted: May 3, 2010 10:08 pm by MicrosoftExpert975 pts.
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Now with DACs keep in mind that they don’t support every database object type, or database security, they break your log backups among other problems.