单项选择题 Software configuration management (SCM) is the task of tracking and controlling changes in the software. Configuration management practices include configuration identification, change control, ( ) and configuration audit.

单项选择题 In requirements engineering, requirements elicitation is the practice of collecting the requirements of a system from users, customers and other stakeholders. In the following practices, ( ) is rarely used in requirements elicitation.

单项选择题 （ ）is a collection of data sets, which is so large and complex that it becomes difficult to process using on-hand database management tools or traditional data processing applications.