Unlike the older version of BW which uses star schema, BI

7.0 uses the extended star schema. In this, master data is

stored outside the cube.

In the star schema, both master data and transaction data

resides inside the cube bringing many problems: master data

not reusable, computing of alphanumeric values and analysis

being limited.

In BI 7.0 Master data is stored outside the cube which

makes it reusable, and alphanumeric values can be computed

and many more analysis are possible.