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url: >-
  /statelake/administering-statelake/designer/data-definitions/json-definitions/design-json-definitions.md
---

# Design - JSON Definitions

Clicking **Design**, opens the **JSON Definition** designer canvas.

This area creates, maintains, and displays **dataviews** belonging to your **JSON Definition** - regardless of whether they apply to **Source** or **Destination** datasets.

These dataviews tell **Statelake** what datasets and fields are to be used, and how they are to be used.

## JSON Definition Tabs

| Tab Name | Description |
|---|---|
| File | The options under **File** are **New** or **Close**. |
| Generate | Click **Generate** to build and update **JSON** definitions automatically using different samples of **JSON** files. |

## Existing JSON Definition Dataview

If a **JSON Dataview** already exists, it will display here, as illustrated below.

### Dataview Tabs

| Tab Name | Description |
|---|---|
| Preview | Displays a **Preview** of the data from the dataview query. |
| Tables | The **Tables** tab for the dataview. Opens the **JSON DESIGNER** window. |
| Fields | The **Fields** tab for the dataview. Opens the **JSON DESIGNER** window. |
| Calcs | The **Calcs** tab for the dataview. Opens the **JSON DESIGNER** window. |
| Link | When activated, edits an existing relationship **Link**, or creates a new **Link**. |

## New JSON Definition Dataview

The first time that **Design** is opened for your **JSON Definition**, this canvas will be blank.

For a new **JSON Definition** or to add another dataview, select **File** and **New** (or Ctrl-N) to create a new dataview to configure and continue.

Selecting **JSON Dataview** is the only option to continue.

## Buttons

| Button Name | Description |
|---|---|
| OK | Click to save any changes you have made. All changes will be lost if you do not click the **OK** button. |
| Cancel | Click to **Cancel** any changes you have made. |