load: 是一次性的操作。不会在源系统中生成logging table 和 trigger.
replicatin: 将启动load操作以及生成logging table(Delta replication用)。
1：N Replication
If one source system is connected to several target system ( currenctly up to 1:4 supported ),the revelant target system can be selected in the data provisioning UI.
原文：http://www.cnblogs.com/grantliu/p/4087461.html