For the same amount of data, the data packet size determines how work processes will be used in data loading. The smaller the data packet size, the more work processes needed.

Data Warehouse is a dedicated reporting and analysis environment based on the star schema database design technique and requiring special attention to the data ETTL process.

A DataSource is not only a structure in which source system fields are logically grouped together, but also an object that contains ETTL-related information. Four types of DataSources exist:

• DataSources for transaction data

• DataSources for characteristic attributes

• DataSources for characteristic texts

• DataSources for characteristic hierarchies

If the source system is R/3, replicating DataSources from a source system will create identical DataSource structures in the BW system. The maximum number of characters allowed for a DataSource’s technical name is 32.

The Delta update option in the InfoPackage definition requests BW to load only the data that have been accumulated since the last update. Before a delta update occurs, the delta process must be initialized.

A development class is a group of objects that are logically related.

A display attribute provides supplemental information to a characteristic.

Drill-down is a user navigation step intended to get further detailed information.