# Creating a Teradata source node
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## Prerequisites needed
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+ An AWS Glue Teradata Vantage connection, configured with an AWS Secrets Manager secret, as described in the previous section, [Creating a Teradata Vantage connection](creating-teradata-connection.md).
+ Appropriate permissions on your job to read the secret used by the connection.
+ A Teradata table you would like to read from, *tableName*, or query *targetQuery*.

## Adding a Teradata data source
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**To add a **Data source – Teradata** node:**

1.  Choose the connection for your Teradata data source. Since you have created it, it should be available in the dropdown. If you need to create a connection, choose **Create a new connection**. For more information see the previous section, [Creating a Teradata Vantage connection](creating-teradata-connection.md). 

    Once you have chosen a connection, you can view the connection properties by clicking **View properties**. 

1.  Choose a **Teradata Source** option: 
   +  **Choose a single table** – access all data from a single table. 
   +  **Enter custom query ** – access a dataset from multiple tables based on your custom query. 

1.  If you chose a single table, enter *tableName*. 

    If you chose **Enter custom query**, enter a SQL SELECT query. 

1.  In **Custom Teradata properties**, enter parameters and values as needed.