Running a subsetting treatment
Published 27 November 2025
Prerequisites
- You've created and configured your treatment
- Chosen desired size OR starting tables approach
- Creating a subsetting treatment
Running a Subsetting Treatment
Step 1: Start the Treatment
- Click Run Subset in the top-right corner
- The "Run treatment" panel appears
Step 2: Configure Source and Target Databases
Source database: The database to extract data from
- Select an existing connection from the dropdown, OR
- Click + Add connection to create a new one
Target database: The database to copy the subset to
- Select an existing connection from the dropdown, OR
- Click + Add connection to create a new one
Target database requirements:
- Must have the same schema as the source database
- Will be cleared before subsetting (existing data is removed)
- Must be a non-production database
Subsetting modifies the source and target database: The treatment will clear existing data and copy the subset to the target. Make sure you're connecting to a non-production database you're prepared to overwrite.
Step 3: Run the Treatment
- Review the source and target connection details
- Click Run
- Monitor progress
What happens during execution
- TDM extracts data from source
- Clears target database
- Copies subset to target
- Maintains referential integrity
Related pages
← Back to Configuring desired size / starting tables
→ Download treatment for CLI use
→ Subsetting troubleshooting
