A service-oriented architecture consists of a set of services, and each service requires certain system resources to perform its job.

面向服务的体系架构包含一组服务，每个服务需要特定系统资源来执行其工作。

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System layer includes single user management, single resource management and single job management system, and it can offer the service for application layer.

系统层包括统一用户管理、统一资源管理和统一作业管理三部分，为应用层提供服务保障。

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Make learners have understanding of the whole to the characteristic of serving, and can grasp the service system and design the principle and principle with job management.

使学习者对服务的特性有整体的了解，并能掌握服务系统设计与作业管理的原理与原则。

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