It provides a way to access data without accessing the underlying data source. It also provides a way to have a single view of data coming from more than one source.

For example, American Bank has a logical data object model for customer accounts. The logical data object model contains a Customers logical data object.

American Bank wants to view customer data from two relational databases in the Customers logical data object. You can use a logical data object read mapping to perform this task and view the output in the

Data Viewer

view.