Click OK. To move a table, in the Name list, select the table you want to reorder. Then, use

Creating and Maintaining the Presentation Layer 11-7 5. In the Columns tab, you can add, remove, edit, or reorder the presentation columns for this presentation table. 6. In the Hierarchies tab, you can add, remove, edit, or reorder the presentation hierarchies for this presentation table. 7. Use the Aliases tab to specify or delete aliases for this presentation table. See Creating Aliases Synonyms for Presentation Layer Objects for more information about aliases.

8. Click OK.

To reorder a table or sort all tables in a subject area: 1. In the Presentation layer, double-click a subject area. 2. In the Subject Area dialog, click the Presentation Tables tab.

3. To move a table, in the Name list, select the table you want to reorder. Then, use

drag-and-drop to reposition the table, or click the Up and Down buttons. 4. To sort all tables in alphanumeric order, click the Name column heading. This toggles the sort between ascending and descending alphanumeric order. Nesting Folders in Answers You can use the Administration Tool to update Presentation layer metadata to give the appearance of nested folders in Answers. To do this, open the Properties dialog for the presentation table that corresponds to the folder you want to nest and add - to the beginning of the Description field. For example, to nest the Sales Facts folder in the Facts folder in Answers, place the Sales Facts presentation table directly after the Facts presentation table in the metadata and add - to the Description field in the Presentation Table - Sales Facts dialog. To nest a second folder called Marketing Facts in the Facts folder, add - to the Description field for the Marketing Facts presentation table and place it directly after Sales Facts. Only two levels of nesting are supported. Alternatively, you can prefix the name of the presentation table to be nested with a hyphen and a space and then place the table after the presentation table in which it nests. For example, to nest Sales Facts within Facts, place Sales Facts directly after Facts and change its name to - Sales Facts. When Answers displays the folder name in the left pane, it omits the hyphen and space from the folder name. However, the hyphen and space are visible to ODBC clients. Note that these techniques do not provide true folder nesting. If you move the parent presentation table, the child presentation tables do not move with it. These techniques only provide the appearance of nesting in Answers. Creating and Managing Presentation Columns The presentation column names are, by default, identical to the logical column names in the Business Model and Mapping layer. However, you can present a different name by clearing both the Use Logical Column Name and the Custom display name options in the Presentation Column dialog. To provide a convenient organization for your users, you can drag and drop a column from a single logical table in the Business Model and Mapping layer onto multiple presentation tables. This lets you create categories that make sense to the users. For example, you can create several presentation tables that contain different classes of measures: one containing volume measures, one containing share measures, one containing measures from a year ago, and so on. 11-8 Metadata Repository Builders Guide for Oracle Business Intelligence Enterprise Edition Typically, presentation columns are created automatically by dragging and dropping logical columns from the logical layer. To edit the properties of a presentation column: 1. In the Presentation layer, double-click a presentation column to display the Presentation Column dialog. 2. In the General tab, to specify a name that is different from the Logical Column name, clear Use Logical Column Name, and then type a name for the column. Note that aliases are created automatically whenever presentation objects are renamed, so that any queries using the original name do not break.

3. To set permissions for this presentation column, click Permissions. See