IMS/DB Structure

The IMS/DB Structure tab presents the relationships among the segments and fields of an IMS database, grouped by access type (Fast path, Logical, Full function, and File access).

To display the IMS/DB Structure tab, go to Explore Projects tab and select IMS/DB Structure from the Usage in Programs list of analyses to the right of the screen.

The central part of the screen displays the list of attribute filters. By default, all attributes are selected; deselect the ones that you do not want to use. The breadcrumb displays the selected project or projects, the selected attributes together with the filters set for each attribute.

To limit the number of attributes of a certain type that are returned by the filtering operation, use the fields in the Limit column. The default limit is 50; the maximum limit can be set in the corresponding Usage Settings section from the Preferences dialog. For more information, see IMS/DB Structure Settings. The Context column displays the context of the filter operation where relevant. To modify the attributes' order in the list, use the green arrow buttons to the left of the attributes list. When the attributes' order changes, the context of the filtering operation changes. To the right of Attribute filters area, the list of projects is displayed.

Use Save to save the current filter configuration. Use Load to load a previously saved filter configuration.

By default, Enable levels limit is selected and the number of elements that are presented in the Results area is limited by the values set in the Limit column. If you deselect this option, the Limit column from the Attribute filters area disappears and the Results area displays all the results of the analysis. Press Apply to apply the selected filters. When the filtering operation is finished, you can use the black arrow button in the upper left corner of Attribute filters area to hide it and maximize the Results area. To see the IMS/DB Usage parameters in a separate tab, use the arrow button in the upper right corner of IMS/DB Usage tab.

The results of the filtering operation are displayed in the Results area. Use the search field to locate a specific element in the Results tree. Click the adjacent button find only annotated to filter the search results so that only the annotated elements are shown. In the upper right corner of the Results area, the following buttons are available.

Expand all, click this button to expand the tree.

Collapse all, click this button to fold all the tree branches.

Export Results to CSV File, use this button to export the results together with the used filter configuration.

Place the mouse cursor over a node in the tree to display a tooltip that presents the element category and name. When you select a tree node, the area to the right of the screen is updated to display the graphs, reports, and usage analyses that can be generated for the selected element. Also, the Properties view displays the information about the selected element attributes collected from element definition.

The results of the IMS/DB Structure analysis are grouped by IMS/DB access type: Fast path, Logical, Full function, and File access.