The Presentation layer adds a level of abstraction over the Business Model and Mapping layer. It is the view of the data seen by client tools and applications.
The Presentation layer provides a means to further simplify or customize the Business Model and Mapping layer for end users. For example, you can hide key columns or present the schema as a single table. Simplifying the view of the data for users makes it easier to craft queries based on users' business needs.
The section provides instructions for using the Administration Tool's Presentation layer dialog boxes to create and edit repository objects.