# Main tab

![](/files/TgzVdotPpInx7CfCtUUr)

Use this tab to specify the connection string and command execution properties.

## Connection

To specify your connection, use the following:

| Option           | Description                                                                                                                                                                                                                                                                                                                                                                              |
| ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| String           | Enter a MongoDBconnection string URI. Both `mongodb://` and `mongodb+srv://` schemes are supported. his option supports variable substitution, and it can contain the output of the `Encr.bat/encr.sh` command. For more information on URI construction, please see MongoDB's [Connection String URI Format](https://docs.mongodb.com/manual/reference/connection-string/) information. |
| Test and Get DBs | Click to test the connection string and get the databases you are authorized to access.                                                                                                                                                                                                                                                                                                  |
| Database         | Select from the list of databases on which you want ot perform the commands.                                                                                                                                                                                                                                                                                                             |

## Command(s) source

There are a few options to run commands.

Select the **Script** option when you want to run static commands.

![](/files/RzBSwUgKRUTvLLl5cPBK)

| Option                         | Description                                                                                                                                                                                                         |
| ------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Script                         | Enter the commands you want to execute in the text box. You can use multiple commands by separating them with semi-colons.                                                                                          |
| Execute for every row of input | Select this option to execute the command for each incoming row for the step. When selected, a question mark(?) wild card field substitution can be used to modify the commands that will be invoked with row data. |

Select the \*\*Field\*\* option when the run commands are specified on an incoming field.

![](/files/KuTNnFtGnYLcQx0xN6GI)

| Option                     | Description                                                                   |
| -------------------------- | ----------------------------------------------------------------------------- |
| Name                       | The name of an incoming field that contains one or more commands to execute.  |
| Perform ? value substition | Select this option to perform a field name substitution before the step runs. |


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