# Teradata

This page guides you through the process of setting up the Teradata destination connector.

## Prerequisites

To use the Teradata destination connector, you'll need:

- Access to a Teradata Vantage instance

  **Note:** If you need a new instance of Vantage, you can install a free version called Vantage Express in the cloud on [Google Cloud](https://quickstarts.teradata.com/vantage.express.gcp.html), [Azure](https://quickstarts.teradata.com/run-vantage-express-on-microsoft-azure.html), and [AWS](https://quickstarts.teradata.com/run-vantage-express-on-aws.html). You can also run Vantage Express on your local machine using [VMware](https://quickstarts.teradata.com/getting.started.vmware.html), [VirtualBox](https://quickstarts.teradata.com/getting.started.vbox.html), or [UTM](https://quickstarts.teradata.com/getting.started.utm.html).

You'll need the following information to configure the Teradata destination:

- **Host** - The host name of the Teradata Vantage instance.
- **Username**
- **Password**
- **Default Schema Name** - Specify the schema (or several schemas separated by commas) to be set in the search-path. These schemas will be used to resolve unqualified object names used in statements executed over this connection.
- **JDBC URL Params** (optional)

[Refer to this guide for more details](https://downloads.teradata.com/doc/connectivity/jdbc/reference/current/jdbcug_chapter_2.html#BGBHDDGB)

## Sync overview

### Output schema

Each stream will be output into its own table in Teradata. Each table will contain 3 columns:

- `_airbyte_ab_id`: a unique uuid assigned by Airbyte to each event that is processed. This is the primary index column. The column type in Teradata is `VARCHAR(256)`.
- `_airbyte_emitted_at`: a timestamp representing when the event was pulled from the data source. The column type in Teradata is `TIMESTAMP(6)`.
- `_airbyte_data`: a json blob representing with the event data. The column type in Teradata is `JSON`.

### Features

The Teradata destination connector supports the
following[ sync modes](https://docs.airbyte.com/cloud/core-concepts#connection-sync-modes):

| Feature                        | Supported?\(Yes/No\) | Notes |
| :----------------------------- | :------------------- | :---- |
| Full Refresh Sync              | Yes                  |       |
| Incremental - Append Sync      | Yes                  |       |
| Incremental - Append + Deduped | No                   |       |
| Namespaces                     | Yes                  |       |

### Performance considerations

## Getting started

### Requirements

You need a Teradata user with the following permissions:

- can create tables and write permission.
- can create schemas e.g:

You can create such a user by running:

```
CREATE USER airbyte_user  as perm=10e6, PASSWORD=<password>;
GRANT ALL on dbc to airbyte_user;

```

You can also use a pre-existing user but we highly recommend creating a dedicated user for Airbyte.

### Setup guide

#### Set up the Teradata Destination connector

1. Log into your Airbyte Open Source account.
2. Click **Destinations** and then click **+ New destination**.
3. On the Set up the destination page, select **Teradata** from the **Destination type** dropdown.
4. Enter the **Name** for the Teradata connector.
5. For **Host**, enter the host domain of the Teradata instance
6. For **Default Schema**, enter the Default Schema name. The default value is public.
7. For **User** and **Password**, enter the database username and password.
8. To customize the JDBC connection beyond common options, specify additional supported [JDBC URL parameters](https://downloads.teradata.com/doc/connectivity/jdbc/reference/current/jdbcug_chapter_2.html#BGBHDDGB) as key-value pairs separated by the symbol & in the **JDBC URL Params** field.

   Example: key1=value1&key2=value2&key3=value3

   These parameters will be added at the end of the JDBC URL that the AirByte will use to connect to your Teradata database.

## Changelog

<details>
  <summary>Expand to review</summary>

| Version | Date       | Pull Request                                    | Subject                                                  |
| :------ | :--------- | :---------------------------------------------- | :------------------------------------------------------- |
| 0.1.6   | 2024-06-24 | https://github.com/airbytehq/airbyte/pull/39455 | Fix for Parameter 2 length size                          |
| 0.1.5   | 2024-01-12 | https://github.com/airbytehq/airbyte/pull/33872 | Added Primary Index on \_airbyte_ab_id to fix NoPI issue |
| 0.1.4   | 2023-12-04 | https://github.com/airbytehq/airbyte/pull/28667 | Make connector available on Airbyte Cloud                |
| 0.1.3   | 2023-08-17 | https://github.com/airbytehq/airbyte/pull/30740 | Enable custom DBT transformation                         |
| 0.1.2   | 2023-08-09 | https://github.com/airbytehq/airbyte/pull/29174 | Small internal refactor                                  |
| 0.1.1   | 2023-03-03 | https://github.com/airbytehq/airbyte/pull/21760 | Added SSL support                                        |
| 0.1.0   | 2022-12-13 | https://github.com/airbytehq/airbyte/pull/20428 | New Destination Teradata Vantage                         |

</details>