The problem of rule-scheduling is how to get effective schedulingrules rapidly to set up knowledge base for expert system.
规则调度所面临的问题是如何快速获取有效的调度规则以建立起专家系统知识库。
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You can create simple or complex schedulingrules that govern when Jobs run. Listing 7 shows one way you can create a rule that prevents two Jobs from running at the same time.