Data change notifications (DCNs) refresh data when a change to the enterprise information system (EIS) occurs.
DCN requests are sent to Unwired Server as HTTP GET or POST operations. Each DCN can instruct Unwired Server to modify cached MBO data.
A DCN can be invoked by a database trigger, an EIS event, or an external process. DCNs are more complex to implement than other data refresh methods, but ensure that changes are immediately reflected in the cache.
- An event initiates the DCN.
- The DCN (HTTP POST or GET) is issued to Unwired Server.
- A result response is returned to the EIS.