Creating Logical Dimensions with Ragged and Skipped- Level Hierarchies
• Import Metadata and Define Physical Layer Objects
• Create Logical Table and Logical Columns
• Create a Ragged/Skipped Levels Logical Dimension
• Create Presentation Layer Objects
• Test Your Work
Import Metadata and Define Physical Layer Objects
1 . Open the BISAMPLE repository in offline mode.
2 . In the Physical layer, expand orcl.
3 . Right-click Connection Pool and select Import Metadata to open the Import Wizard.
4 . In the Select Metadata Types screen, accept the defaults and click Next.
5 . In the Select Metadata Objects screen, in the data source view, expand BISAMPLE.
6 . In the data source view, select the SAMP_PRODUCTS_DR table for import:
7 . Click the Import Selected button to move the table to the Repository View.
8 . Expand BISAMPLE in the Repository View and confirm that the SAMP_PRODUCT_DR table is visible.
9 . Click Finish to close the Import Wizard.
10 . Confirm that the SAMP_PRODUCT_DR table is visible in the Physical layer of the repository.
11 . Create the following alias for the table: D20 Product
12 . Use the Physical Diagram to create the following physical join for the alias table:
"orcl".""."BISAMPLE"."D20 Product"."PROD_KEY" = "orcl".""."BISAMPLE"."F1
Revenue"."PROD_KEY"
13 . Right-click D20 Product and select View Data.
Notice there are skipped levels in the hierarchy. For example, brand A - Brand2 has a NULL value for LOB for the product D - Product 8.
14 . Close View Data.
Create Logical Table and Logical Columns
1 . Drag D20 Product from the Physical layer to the Sample Sales business model in the BMM layer to create a D20 Product logical table. The logical join to F1 Revenue is created automatically based on the join in the Physical layer.
| Old Name | New Name |
| BRAND | Brand |
| LOB | LOB |
| PROD_DSC | Product |
| PROD_KEY | Product Number |
| Type | Product Type |
3 . Rename the D20 Product logical table source to LTS1 Product (Ragged)
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Create a Ragged/Skipped Level Logical Dimension
1 . Right-click the D20 Product logical table and select Create Logical Dimension > Dimension with Level-Based Hierarchy to automatically create a logical dimension named D20 ProductDim.
2 . Rename D20 ProductDim to H20 Product.
3 . Double-click the H20 Product logical dimension to open the Logical Dimension dialog box.
4 . On the General tab, select both Ragged and Skipped Levels.
5 . Click OK to close the Logical Dimension dialog box.
6 . Expand H20 Product.
7 . Create the following hierarchy:
| Level | Column | Key | Use for Display |
| Product Total | <none> | <none> | <none> |
| Product Brand | Brand | Brand | Yes |
| Product LOB | LOB | LOB | Yes |
| Product Type | Product Type | Product Type | Yes |
| Product | Product | Product | Yes |
| Product Detail | Product Number | Product Number | Yes |
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