The role of a universe is to provide an interface that is easy to use and understand for non technical Web Intelligence users to run queries against a database to create reports and perform data analysis.
As the universe designer, you use Designer to create objects that represent database structures, for example columns and database functions, that users need to access and query, to get the information necessary to meet their business requirements.
The objects that you create in the universe must be relevant to the end user business environment and vocabulary. Their role is to present a business focussed front end to the SQL structures in the database.
The following diagram shows the role of objects as the mapping layer between a database schema and the Query work area in Web Intelligence, that users use to create queries to run against database tables.