# CfnDatasetGroupProps

Properties for defining a `CfnDatasetGroup`.

Extends: CfnDatasetGroupProps
Used as props by: CfnDatasetGroup

- Source: Generated code
- Type last changed: v2.9.0 · 26 Jan 2022

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_forecast as forecast } from 'aws-cdk-lib';
const cfnDatasetGroupProps: forecast.CfnDatasetGroupProps = {
  datasetGroupName: 'datasetGroupName',
  domain: 'domain',

  // the properties below are optional
  datasetArns: ['datasetArns'],
  tags: [{
    key: 'key',
    value: 'value',
  }],
};
```

## Properties

- `datasetArns`: string[] — An array of Amazon Resource Names (ARNs) of the datasets that you want to include in the dataset group.

- `datasetGroupName`: string (required) — The name of the dataset group.

- `domain`: string (required) — The domain associated with the dataset group.

  When you add a dataset to a dataset group, this value and the value specified for the `Domain` parameter of the [CreateDataset](https://docs.aws.amazon.com/forecast/latest/dg/API_CreateDataset.html) operation must match.

  The `Domain` and `DatasetType` that you choose determine the fields that must be present in training data that you import to a dataset. For example, if you choose the `RETAIL` domain and `TARGET_TIME_SERIES` as the `DatasetType` , Amazon Forecast requires that `item_id` , `timestamp` , and `demand` fields are present in your data. For more information, see [Dataset groups](https://docs.aws.amazon.com/forecast/latest/dg/howitworks-datasets-groups.html) .

- `tags`: [CfnTag](/cdk/api/v2/docs/aws-cdk-lib.CfnTag.html)[] — An array of key-value pairs to apply to this resource.

  For more information, see [Tag](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-resource-tags.html) .