从作业顺序图出发，定义了作业的序关系。

According to task sequence diagram, this paper defined sequence operations between different tasks.

youdao

Oozie工作流是放置在控制依赖DAG（有向无环图 Direct Acyclic Graph）中的一组动作（例如，Hadoop的Map/Reduce作业、Pig作业等），其中指定了动作执行的顺序。

Oozie workflow is a collection of actions (i.e. Hadoop Map/Reduce jobs, Pig jobs) arranged in a control dependency DAG (Direct Acyclic Graph), specifying a sequence of actions execution.

youdao

传统的项目管理工具，如PERT图、甘特图，都能清楚地显示各个作业之间的相互关系，也适用于合理安排作业执行的顺序。

The traditional project management tool, such as PERT and Gantt chart are used in activities sequencing. Those activities are independent with each other.

youdao