# System Model Definition Query

> The System Model Definition is helpful in training your AI Models, building queries, and exposing your application ontology to visual graph tools. 1. Open…

Source: https://www.fuuz.com/help/system-model-definitions
Last updated: 2026-06-11

Build Apps · Data Models


Last updated June 11, 2026, 4:08 PM UTC

The System Model Definition is helpful in training your AI Models, building queries, and exposing your application ontology to visual graph tools.

## 1. Open the API Explorer

Navigate to the API Explorer:

![API Explorer location in the Fuuz platform](https://www.fuuz.com/assets/help/18fd87c2e0fc.webp)

## 2. Run the Query

Remove the boilerplate query and replace it with the query defined below.

![Query editor showing the boilerplate to be replaced](https://www.fuuz.com/assets/help/55098831807d.webp)

> **Note:** If you want ALL models, including system (platform) models, you must remove the `dataModelDeploymentId: { _isNull: false }` portion of the query. If you leave this in, it will only return models that have at least one deployment.

```
{
  modelDefinitions(
    where: {
      metadata: {
        mfgx: {
          dataModel: {
            dataModelDeploymentId: { _isNull: false }
          }
        }
      }
      _not: {
        _or: [
          { metadata: { mfgx: { isDataChangeModel: { _eq: true } } } }
          { name: { _endsWith: "_CustomFields" } }
        ]
      }
    }
  ) {
    name
    description
    fields {
      name
      type
      description
    }
  }
}

```

## 3. Review the Results

After executing the query, the Results panel will include the entire data graph of your Fuuz tenant.

![Results panel showing the full data graph](https://www.fuuz.com/assets/help/9c8676e9d0ed.webp)

Collapse at line #1 to export the results to another format (e.g., a text file).

> **Sample export:** A sample export from one of our MES accelerator applications is available as an attachment on the [original KB article](https://www.fuuz.com/help/system-model-definitions). Download it from the original article linked above.

## See Also

- [Data Flow Nodes Reference](https://www.fuuz.com/help/data-flow-node-reference)
- [Data Model (Schema) Design Standards](https://www.fuuz.com/community)
- [Aggregate Query API](https://www.fuuz.com/help/aggregate-query-api)
- [Setting TTL on a Data Model / Table](https://www.fuuz.com/help/setting-ttl-on-a-data-model-table)

### Need more help?

Ask the Fuuz community, or open a ticket with Fuuz support.

[Ask the community](https://www.fuuz.com/community) [Open a ticket](https://support.fuuz.com/portal/en/newticket)

On this page

[1. Open the API Explorer](#1-open-the-api-explorer)

[2. Run the Query](#2-run-the-query)

[3. Review the Results](#3-review-the-results)

[See Also](#see-also)