Required system data flow model gives a functional view of the required system 所需系统数据流程模型以功能的观点来探讨所需系统。
Current physical data flow model describes the functional aspect of the current environment 现时实体数据流程模型描述现时环境的功能。
After the current physical data flow model is confirmed with users , logicalize it to produce the logical data flow model 与用户确认现时实体数据流程模型后,将之逻辑化,以编制逻辑数据流程模型。
These options may be supported by technical documentation such as work practice model , logical data model and data flow model 这些选择可能需要某些技术性文件的支援,如工作实务模型、逻辑数据模型及数据流程模型。