Abstract: Software evolution becomes an important characteristic in software life cycle. System dynamic development model, which supports software concurrent engineering, is extended with standardization, role model, resource model and hierarchy. It produces the second generation SDDM, which is configurable, reusable, supporting the standardization and software evolution model.

Key words: software evolution, software process model, Petri net, SDDM model

摘要： 软件演化已成为软件生存周期中最重要的形态之一。该文对支持软件并行工程的SDDM过程模型在标准化、角色模型、资源模型、层次化4个方面进行了扩展，得到了一个支持标准化的可配置、可重用、支持软件演化过程的第2代SDDM软件过程模型。

关键词: 软件演化, 软件过程模型, Petri网, SDDM模型

CLC Number: 

• TP311