The team started to produce a single, global object model for the entire Supply Chain Management sample application.
该小组开始为整个供应链管理样本应用程序建立一个单一的全局对象模型。
Using the XML data model, the whole hierarchy of data object wrappers can be eliminated, leaving the programmer to focus on the business logic rather than on the business data management.
通过使用XML数据模型，就可以取消整个数据对象包装器层次结构，让开发人员将注意力集中在业务逻辑上，而不会为业务数据管理分心。
PHP 5 introduces improvements to the object model; also, the underlying memory management has been redesigned with multi-threading and performance in mind.
PHP 5改进了对象模型，底层的内存管理也从多线程和性能的角度重新作了设计。
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