Nikhil,
Consider the following example..
A company may have two platforms, one that processes orders, and a seperate accounting system. The accounts department enters new customer details into the accounting system but has to ensure these customers appear in the order processing system.
To do this it runs a nightly batch job that sends data from the accounting system to the order system.
If they were deleting all customer details in the order system and refilling with all the customers in the accounting system then they would be performing a full reload which takes long time.
If they only sent accross the new customers and the customers that had been changed they would be performing an incremental load which means the incremental load will keep the old data as it is and load only new data. Consumes less load time.
Find the attachment for detail information
