Click OK. Oracle Fusion Middleware Online Documentation Library

9-26 Oracle Fusion Middleware Administrators Guide for Oracle Business Intelligence Discoverer

5. Right click one of the selected items and choose Delete Item from Item Class on

the popup menu. 6. Discoverer Administrator displays the Confirm Delete dialog . For further information, see How to delete items and item classes . How to remove items from an item class using the Edit Item Class dialog

1.

Click the Workarea: Data tab . 2. Click the item class to edit and choose Edit | Edit... 3. Display the .

4. Move the items you want to remove from this item class from the Selected items

list to the Available items list. You can select more than one item at a time by holding down the Ctrl key and clicking another item. 5. Click OK. For more information, see How to edit an item class . How to remove items from an item class using the Item Properties dialog

1.

In the Workarea: Data tab select the items to remove from an item class. 2. Choose Edit | Properties to display the Item Properties dialog .

3. Specify None in the Item class field.

4. Click OK. For more information, see How to edit item properties . How to view the items that use an item class To view the items that use a specific item class:

1.

In the Workarea: Data tab , click the + symbol next to the item class that you want to expand. This reveals two objects under the item class. ■ List of values ■ Items using this item class with drill to detail 2. Click the + symbol next to Items using this item class with drill to detail to display the list of items that belong to this item class. How to view the list of values for an item To view the list of values associated with an item:

1.

In the Workarea: Data tab expand the item that has a list of values you want to view. Notes ■ Discoverer may warn you that retrieving the list of values may take a long time. When you retrieve a list of values Discoverer submits a SELECT DISTINCT query Maintaining Items and Item Classes 9-27 to the database which selects the distinct set of values for the item. If there is a large number of values in the database, retrieving the list can take some time. The End User Layer has a record of the length of time it takes to retrieve the values. If this length of time is greater than 15 seconds, Discoverer displays a warning. You can change this limit in Discoverer Plus under Tools | Options | Query Governor. ■ If the item you want to display a list of values for exists in more than one folder, choose the item in the folder that has the least number of rows. This will return the list of values in the shortest amount of time. How to view the list of values for an item class To view the list of values associated with an item class:

1.

Display the Workarea: Data tab . 2. Click the + symbol to expand the item class whose list of values you want to view. This reveals two items under the item class: ■ List of values ■ Items using this item class 3. Click the + symbol to expand the List of values object to display the list of values for the item class. Figure 9–21 Workarea: Item classes tab displaying a list of values Notes ■ Discoverer may warn you that retrieving the list of values may take a long time. When you retrieve a list of values, Discoverer submits a SELECT DISTINCT query to the database which selects the distinct set of values for the item. If there is a large number of values in the database, retrieving the list can take some time. The End User Layer has a record of the length of time it takes to retrieve the values. If this length of time is greater than 15 seconds, Discoverer displays a warning. You can change this limit in Discoverer Plus under Tools | Options | Query Governor.