架构师可能需要阅读整个系列，不过他们可以把主要精力放在第2 - 4章，其中介绍了门户研讨会、项目计划和任务评估、以及门户设计。
Architects might read the entire series but they could focus on chapters 2-4, which cover the portal workshop, project planning and task estimation, and portal design.
数据架构主要由下面部分介绍的四级模型定义。
The data architecture is defined primarily by models at four levels, described in the following sections.
介绍了J2EE架构的概念、内容和特点及其主要技术。
It also introduces concept, content, characteristic and main technology of J2EE frameworks.
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