> For the complete documentation index, see [llms.txt](https://docs.novacura.com/flow-connect/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.novacura.com/flow-connect/reference/reference/portal/design-items/portlets/data-tree.md).

# Data tree

The Data tree portlet displays data in a hierarchical tree structure. It allows users to view and navigate data relationships, and select and filter datasets.

## General

General data is required for all portlets, see [General](/flow-connect/reference/reference/portal/design-items/common-portlet-configuration/general.md).

## Events

To set up an event, see [Events](/flow-connect/reference/reference/portal/design-items/common-portlet-configuration/events.md).

## Data

To set up a data source, see [Data](/flow-connect/reference/reference/portal/design-items/common-portlet-configuration/data.md). 

### Data source columns

In the data source column, you can change column names and set their types. Click **Manage** to access a grid view of the configuration. 

### Nodes

* **Nodes:** The column where the node ID is specified.
* **Parents:** The column indicating the parent value for each node, showing the hierarchical relationship.
* **Names:** The column where the names to be displayed in the data tree are specified.

**Advanced Settings:**

* **Override start node id:** Define the value for the starting node of the data tree. This determines the initial node from which the tree structure begins.
* **Hide root node:** Set to true if you want the root level to be hidden, making the first visible node the next level in the hierarchy.
* **Hide Orphan Nodes:** Set to true to hide nodes that do not have a parent node.

## Style

To configure style, see [Style](/flow-connect/reference/reference/portal/design-items/common-portlet-configuration/style.md).


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