Data Masking Components: Number Rollup
A number rollup algorithm is a form of generalization that allows a user to set a range of numerical values for the input of numerical data in order to ensure a generalized value will be outputted.
The purpose of a Rollup Data Masking component is to achieve greater control of the output distribution of values. In particular, it allows the user to preserve or change the shape of the output data statistical distribution.
|The Number Rollup data masking component obtains a sub-range of the values from the finite predefined range of numeric values and allows a user to map the sub-range into a specified numeric value. A default value is set for the numbers not mapped via ranges. In Custom Properties, you can add a new filter for Rollup ranges, which can be imported and exported.|
|1. Configure a source that contains the column with alphabetical and numeric characters. The data in the column may also include any other character that will be treated as a separator.|
|2. Drag and Drop Masking Number Rollup component, connect the source and the Masking Number Rollup component with the source's precedence constraint.|
|3. Now, the precedence constraint (the blue arrow) passes proper meta-data to the Masking Number Rollup component. If you click on the constraint, you will see:|
|4. Now that the metadata for the Masking Number Rollup exists, and values are passed into the data masking component, please open the component editor:|
|5. In the second tab, there are input columns. Please check-mark only one column, the one that you will be masking with Masking Number Rollup algorithm:|
|6. This will create an extra column with the prefix “Masked_”.|
|7. Create a connection manager for the destination and configure the source component for the destination. In the connection manager, in the tab “Mappings”, specify that you want the newly-created Field_Masked to be a field replacing the original value. For that, just click on the available input columns, choose the masked value, and map to the “Available Destination Columns”|
|8. Now, all the configurations are complete for the valid values. You can run the package with the Masking Number Rollup component, and see the results of data masking:|