Substitution support has been enhanced to support a new pattern: a temporary absence defined by a time interval.
替换支持已经得到增强,可以支持一个新模式:按时间间隔定义的临时缺席。
The ISO SQL-92 standard recognizes this difference and provides support for these two interval types.
ISO SQL - 92标准承认了这种不同,并提供了对这两种时间间隔类型的支持。
Most significant in this area is support for cron-style scheduling in addition to the EJB 3.0 interval based timer API.
除 EJB 3.0 基于间隔的计时器 API 外,这个领域最重大的改进是对 cron 风格调度的支持。
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