A version control system is a stand-alone, fundamental component of a configuration management system that is responsible for the management of individual versions of controlled files/items, providing the ability to manage versions of controlled item versions, typically involving the...

• Management i.e. creation, update & conditional deletion of item versions
• Support of version branches
• Support for the merging of item versions
• Management i.e. creation, update & conditional deletion of controlled item version labels

Note that the merging of item versions is specific to software configuration control/management systems, the facility is neither required, nor indeed present, in hardware control/management systems.

Note also that the management of item version labels provides the basis for baseline management - in which aggregates of items (& their versions) are managed as enitities in their own right.

I would take issue with CountZero in as much as ... Allows more than one programmer work on the same project ... is not necessarily provided by a version control system, it is known (in the trade) as co-ordination of concurrent development and is a fundamental requirement of any configuration management system.

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