A derived object (DO) is a file created in a Versioned Object Base (VOB). The file is created automatically, and records the result of a particular action during the building or maintenance of a program in a software configuration management (SCM) environment. The term is most often used in conjunction with an SCM product called ClearCase, which was developed by Rational Software.
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In ClearCase, each derived object has a configuration record (CR) that describes the build environment, and also describes the build history for the program under development. Every derived object is assigned a unique identifier called the DO-ID.