External changes to the target data store are outside the scope of this pattern.
对目标数据存储进行外部更改超出了这种模式的范围。
The mechanism (out of scope for this pattern) would run periodically to remove entity records that shouldn't be migrated from an alternate source to the preferred source.
这种机制（超出了这个模式范围）将周期性地运行，以删除那些不应该从备用源迁移到首选源的实体记录。
One way to limit the applicable pattern scope is to categorize patterns according to the architecture tier or tiers to which they apply.
限制适用模式的一个方法是，根据其应用到的体系结构层次对模式进行分类。
应用推荐