# Lineage and impact analysis

Before editing an entity or attribute, you may want to see which other entities/attributes in the entity’s/attribute’s lineage will be impacted by the change. For example, removing the "Discount" attribute from a table will affect the "Total Price". Additionally, a single attribute may have different names depending on its location.

Places where you can view lineage in Compose:

* The Manage Model window described below.

* The Display Model window described in [Displaying the model](https://help.qlik.com/en-US/compose/December2024/Content/ComposeDWDL/Main/DW/Model/display_model.htm).

* When editing a data mart. For more information, see [Managing data marts](https://help.qlik.com/en-US/compose/December2024/Content/ComposeDWDL/Main/DW/Data%20Marts/manage_data_marts.htm).

Information note

Top-level entities in the data mart fact will not be shown in the lineage. For example, if both the Orders and Order Details entities are used in a Fact, the Model lineage for Orders will show Order Details but not Orders.

To view the lineage of an entity or attribute:

1. Click the Manage button in the bottom left of the Model panel.

   The Manage Model window opens.

2. Display the lineage as described below:

Lineage procedures

| To | Do This |
| --- | --- |
| Show an entity’s lineage | Select the entity and select Show Lineage from the drop-down menu in the Entity toolbar. |
| Show an attribute’s lineage | Select the attribute and click the Show Lineage button in the Attribute toolbar. |