每项作业定义包含四个字段。

Each job definition includes four fields.

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论述了如何用JDL语言实现现有作业管理系统中的作业定义和作业调度功能，并对该语言在未来的作业管理系统中的应用以及由此带来的优点进行了论述。

Discussed how to use JDL to implement job definition and job scheduling functions in current JMS and how to use JDL in a future JMS and the advantages brought by using of JDL.

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清理作业的定义决定在运行清理服务时删除哪些过程实例。

The definition of so called cleanup jobs determines which process instances are actually deleted when the cleanup service runs.

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Now that's changing the more years that pass the more of you have 64-bit computers and the more servers have many, many gigabytes of RAM and so you need actually 64-bits, but for now let's assume a common system whereby a pointer just by definition of the homework is 32 bits.

现在计算机也在改变，也有更多的人,使用64位的计算机，更多的服务器有很多，很多G的内存，那样你就需要64位的，现在我们假设通常的系统中,根据家庭作业所定义的，一个指针为32位。

哈佛公开课 - 计算机科学课程节选