这个模型包括了你的服务的拓扑结构和尺寸、它所占用的资源、健康约束条件以及配置设置。
The model include the topology and size of your service, the resources it relies on, the health constraints as well as configuration Settings.
已知现有系统的约束条件，只考虑纯粹的业务需求很可能产生不实际或不可能实现的服务定义。
Considering only pure business requirements is likely to result in service definitions that are impractical or impossible to implement, given the constraints of existing systems.
接下来，将利用以下调用，使用刚才建立的约束条件和过滤器来执行ldap服务器查询。
Next, your LDAP server querying is performed with the following call using the constraints and filter you just established.
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