A parent-child hierarchy is a hierarchy of members that all have the same type. This contrasts with level-based hierarchies, where members of the same type occur only at a single level of the hierarchy. The most common real-life occurrence of a parent-child hierarchy is an organizational reporting hierarchy chart, where the following all apply:
• Each individual in the organization is an employee.
• Each employee, apart from the top-level managers, reports to a single manager.
• The reporting hierarchy has many levels.
In relational tables, the relationships between different members in a parent-child hierarchy are implicitly defined by the identifier key values in the associated base table. However, for each Oracle BI Server parent-child hierarchy defined on a relational table, you must also explicitly define the inter-member relationships in a separate parent-child relationship table.
To create a logical dimension with a parent-child hierarchy, perform the following steps:
- Open the Repository in Offline Mode
- Import Metadata and Define Physical Layer Objects
- Create Logical Table and Logical Columns
- Create a Logical Join
- Create a Parent-Child Logical Dimension
- Define Parent-Child Settings
- Create Presentation Layer Objects
- Test Your Work
Open the Repository in Offline Mode
1 . | Return to the Administration Tool, which should still be open. If not, select Start > Programs > Oracle Business Intelligence > BI Administration. |
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2 . | Select File > Open > Offline. |
3 . | Select BISAMPLE.rpd and click Open.
Do not select any BISAMPLE repository with an extension, for example,
BISAMPLE_BI0001.rpd. Recall that these are the repositories that have
been loaded into Oracle BI Server memory. |
4 . | Enter BISAMPLE1 as the repository password and click OK to open the repository. |
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