2. Developing Your Ontology20. Exercise Summary
Feedback

20 - Exercise Summary

This content is also available at learn.palantir.com ↗ and is presented here for accessibility purposes.

What you built

  • Removed the RuleId property from your flight alert object type.
  • Removed the category column from your flight alert object type backing dataset.
  • Changed the Risk Premium column from an Double to a Integer.

What you learned

  • When your backing dataset receives new rows or updated values, they automatically sync to the object storage service (e.g. Phonograph or OSv2).
  • When your backing dataset receives new columns, they automatically sync to the object storage service. To add them to your object type, you’ll need to manually map them in the mapping UI in Ontology Manager.
  • You can unmap columns in Ontology Manager to remove them from your object type.
  • If you delete a column from the backing dataset, you’ll need to unmap it, save the Ontology, and update the table registration to remove it from the object type.
  • If you change a data type in a backing dataset, you’ll need to reset the property type in the property metadata editor.