To
put it simply, in a certain cycle, all data of the current system within the cycle time is copied to the target table/system. This synchronization method is called full
incremental
incremental synchronization. The premise is that the full amount is then increased according to the rules. Volume synchronization;
the basis of increment is full volume, that is, you have to copy the full amount of data in a certain way, and then use the incremental method to synchronize the update.
Incremental means to capture data after a certain moment (update time) or checkpoint (checkpoint) for synchronization, not irregular full synchronization.
https://blog.csdn.net/qq_42630887/article/details/109120331