SAP BI Overview contains overview about:

1. Difference between OLAP and OLTP
2. Layout/steps in SAP BW
3. ER-Model (Entity Relationship model)
4. Designing DB
   1. Object Oriented
   2. Normalization
5. DB concepts in OLTP
   1. Star Schema (traditional schema)
   2. Extended Star Schema (BW schema)
   3. Snow Flake scheme
   4. Hybrid schema
6. Information about the first screen for BW

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