After analysis of inherit, logical and aggregation relationships among the objects, the object sets of problem domain, system data structure and application frameworks were designed, and the system extensibility was also discussed.
英
美
- 通過(guò)對象之間繼承關(guān)系、邏輯關(guān)系和聚合關(guān)系的分析，設計了領(lǐng)域問(wèn)題對象集、系統數據結構和應用框架，并討論了系統的可擴充性。
