what is Designer and Creation Of Universe?

What is Designer?

Designer is a BusinessObjects IS module used by universe designers to create and maintain universes. Universes are the semantic layer that isolates end users from the technical issues of the database structure. Universe designers can distribute universes to end users by moving them as files through the file system, or by exporting them to the repository.

BO Universe is essentially a connection layer sitting between the source data and the DW. It is defined by the data mapping or schema or the relationship between database tables. Each universe is accessed by certain category of users. For example, finance people will access finance universe, sales people will access sales universe. The analogy is similar to a data mart.

The advantge of the BO universe is that if there are any changes in the source data structure, this change needs to be made only in the Universe and its effect gets pushed down to all the reports emanating from this universe. A good universe design helps is improving speed and contributes to the Best Practices using BO.

How do you design a universe?

The design method consists of two major phases.
During the first phase, you create the underlying database structure of your universe. This structure includes the tables and columns of a database and the joins by which they are linked. You may need to resolve loops which occur in the joins using aliases or contexts. You can conclude this phase by testing the integrity of the overall structure.
During the second phase, you can proceed to enhance the components of your universe. You can also prepare certain objects for multidimensional analysis. As with the first phase, you should test the integrity of your universe structure. Finally, you can distribute your universes to users by exporting them to the repository or via your file system.