Best Practices for SAP BI using DB2 9 for z/OS - IBM Redbooks

can be updated into InfoCubes or other DSO objects using a delta update. Data
in an DSO object can be analyzed with the SAP BI Business Explorer.
A DSO object contains a key (for example, order number) as well as data fields
(key figures). As opposed to InfoCubes, fields in an DSO object can be
overwritten. This is useful to process document structures, for example.
If you change documents in an OLTP system, the changes not only affect
numeric fields such as order quantity, but also non-numeric fields such as status
and delivery date. To reflect these changes in the DSO object, the relevant fields
in the DSO objects must be overwritten and set to the current value.
Figure 12-10 shows an example of two layers of DSO objects that are used to
update order and delivery information. These DSO objects allow you to
determine, for example, which orders are open, partly delivered, or completely
delivered.
InfoCube
Update Rules
Figure 12-10 Using multiple layers of DSO objects to integrate data
274 Best Practices for SAP BI using DB2 9 for z/OS
Update Rules
Order-
Delivery
ODS
Update Rules
Order Delivery
Transfer Rules / Update Rules
PSA
Order Delivery
Level 2
Level 1