某些应用程序需要了解特定时间范围内的数据库更新，以便进行数据复制、场景审计等等。
Some applications need to know database updates for certain time ranges, which may be used for replication of data, auditing scenarios, and so forth.
这指定每隔多长时间用来自数据库的新信息自动地更新视图。
This prescribes how often the view is automatically updated with new information from the database.
因为你在一年里会获得新的联系，花时间将他们更新到你的商务贺卡数据库上去。
As you gain new contacts throughout the year, take time to add them to your database for your business greeting card group.
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