If you select Create new, a copy of the logical source associated with the logical If you select Use existing, in the Use existing list, you must select a logical source On the General tab of the Physical Table dialog, ensure that Cacheable is not Select

8-20 Metadata Repository Builders Guide for Oracle Business Intelligence Enterprise Edition Dimensions appear in the Dimensions list. If this attribute is associated with a logical level, the level appears in the Levels list. Another way to associate a measure with a level in a dimension is to expand the dimension tree in the Business Model and Mapping layer, and then use drag-and-drop to drop the column on the target level. For more information about level-based measures, see Example 9–1 . To associate a measure with a logical level in a dimension: 1. In the Business Model and Mapping layer of the Administration Tool, double-click a logical column. 2. In the Logical Column dialog, click the Levels tab.

3. In the Levels tab, click the Logical Level field for the dimension from which you

want to select a logical level. In the Levels tab, in the levels list, you can sort the rows toggle between ascending order and descending order by clicking a column heading.

4. In the Logical Level list, select the level.

5. Repeat this process to associate this measure with other logical levels in other dimensions. To remove the association between a dimension and a measure: 1. In the Business Model and Mapping layer of the Administration Tool, double-click a logical column. 2. In the Logical Column dialog, click the Levels tab. 3. In the Levels tab, select the row for the association you want to remove and click Delete .

4. Click OK.

Moving or Copying Logical Columns By default, dragging and dropping a logical column from one table to another moves the logical column. If a column with the same name already exists, the new column is renamed for example, mycolumn1. You can also choose the option Prompt when moving logical columns in the Options dialog to cause the Sources for moved columns dialog to be displayed when you drag and drop a logical column. This dialog gives you options about the drag and drop behavior. See Setting Preferences for more information about selecting the Prompt when moving logical columns option. To move or copy logical columns using the Sources for moved columns dialog: 1. In the Business Model and Mapping layer, drag and drop a logical column to a different logical table. You can select multiple columns to move.

2. In the Sources for moved columns dialog, in the Action area, select an action.

3. If you select Ignore, no logical source is added in the Sources folder of the

destination table.

4. If you select Create new, a copy of the logical source associated with the logical

column is created in the Sources folder of the destination table. Working with Logical Tables, Joins, and Columns 8-21

5. If you select Use existing, in the Use existing list, you must select a logical source

from the Sources folder of the destination table. The column that you moved or copied is associated with this logical source. Enabling Write Back On Columns You can configure individual logical columns so that users in Oracle BI Presentation Services can update column data and write the changes back to the data source. To enable write back on a particular column, you must select the Writeable option for the logical column, and enable the ReadWrite permission for the corresponding presentation column. You must also disable caching on the corresponding physical table. Additional tasks to enable write back need to be performed in Oracle BI Presentation Services. See Configuring for Write Back in Analyses and Dashboards in Oracle Fusion Middleware System Administrators Guide for Oracle Business Intelligence Enterprise Edition for full information. To enable write back for a particular column: 1. In the Administration Tool, in the Physical layer, double-click the physical table that contains the column for which you want to enable write back.

2. On the General tab of the Physical Table dialog, ensure that Cacheable is not

selected. Deselecting this option ensures that Oracle BI Presentation Services users can see updates immediately. 3. In the Business Model and Mapping layer, double-click the corresponding logical column. The Logical Column dialog opens. Figure 8–4 shows the Logical Column dialog. Figure 8–4 Logical Column Dialog with Writeable Option Selected

4. Select Writeable, then click OK.

8-22 Metadata Repository Builders Guide for Oracle Business Intelligence Enterprise Edition 5. In the Presentation layer, double-click the column that corresponds to the logical column for which you enabled write back. The Presentation Column dialog opens.

6. Click Permissions.