Input and output DataSets are required for all ETL transformation flows. At least one input DataSet is required, though you can include as many as necessary. One output DataSet is required at the end of a transformation flow; this is the DataSet you can then use to power Domo cards and apps.
For information about creating an ETL DataFlow, see Creating an ETL DataFlow.
For information about the Data Center, see Data Center Layout.
Important: Input DataSets in a DataFlow cannot be restricted by PDP policies—all available rows must pass through the DataFlow. Because of this you must apply PDP policies to the output DataSets generated by a DataFlow.
When you build a DataFlow using an input DataSet with PDP policies in place, the DataFlow breaks unless at least one of the following criteria applies:
You have an "Admin" security profile or a custom role with "Manage DataFlows" enabled.
You are the DataSet owner.
You are part of the "All Rows" policy. This gives you access to all of the rows in the DataSet.
For more information about using PDP with DataFlows, see PDP and DataFusions/DataFlows.
You can use the Input DataSet action to add a DataSet to the transformation flow.
There must be at least one Input DataSet in a transformation flow.
To configure the Input DataSet action,
Ensure that the data you want to transform already exists in Domo as a DataSet.
Click the Input DataSet action, then select the DataSet you want to transform.
Select Additional Options and choose whether the DataFlow should process the entire input DataSet or only new rows appended since the last DataFlow run.
- Choosing Entire DataSet will process all data from your input DataSet and run them through the transforms.
- Selecting Only new rows appended since this DataFlow last run will process only new data appended to your DataSet. This is a great option if your input DataSet has many rows. as you can only process the new rows rather than the entire DataSet.
Under the Details tab of the input tile, you can view the DataSets:
- Number of rows
- Last Updated
- Column names and type
Select the Data tab to preview a table of the input data.
You can use the Output DataSet action to output the transformed data as a DataSet. You can use this new DataSet to power up cards (or other DataFlows).
There must be an Output DataSet in a transformation flow.
To configure the Output DataSet action,
Ensure that an action is connected to the Output DataSet tile and that all actions are connected and configured in the transformation flow.
Click the Output DataSet tile, then specify the name of the DataSet you want to output by clicking and entering a name and a description.
Select Additional Options and choose either replace or append as your output DataSet update method. For more information on the difference between append and replace, see Update Method.
If the DataFlow has not run yet, the details available are the owner, column names, and column types. Once run successfully, you are able to view all of the same details listed above for the input tile.