changed data capture

基本解释

First, the capture program is started on the primary to capture any changed data that was stranded on the primary when it went down.
首先，捕捉程序将在主站点上启动，捕捉因主站点宕机而仅滞留在主站点中的发生更改的任何数据。
The Q Capture program runs on the source system, reading DB2 recovery logs for changed source data, and writing it to WebSphere MQ queues.
Q Capture 程序在源系统上运行，读取已修改的源数据的 DB2 恢复日志，并将之写入 WebSphere MQ 队列。
While InfoSphere DataStage has stages for accessing data from different databases, it does not have the capability to capture only changed data from reading the database logs.
尽管 InfoSphere DataStage 有不同的阶段用于访问不同数据库的数据，它却不能仅通过读取数据库日志获取增量数据。