Software configuration management (SCM) is a key element of the software development process. A number of new configuration management techniques in commercial SCM tools and environments with SCM capabilities have been observed. This report illustrates some of the advances in SCM concepts by example of a particular commercial system: the Sun Network Software Environment (NSE). NSE embodies a transaction model of configuration management. In order to demonstrate the capabilities and limitations of the transaction model, NSE is applied to three problem areas for configuration management: adaptation for parallel development and team support, development and maintenance in software families and development in a distributed and heterogeneous network.

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