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  1. Preface
  2. Mappings
  3. Mapplets
  4. Mapping Parameters
  5. Mapping Outputs
  6. Generate a Mapping from an SQL Query
  7. Dynamic Mappings
  8. How to Develop and Run a Dynamic Mapping
  9. Dynamic Mapping Use Cases
  10. Mapping Administration
  11. Export to PowerCenter
  12. Import From PowerCenter
  13. Performance Tuning
  14. Pushdown Optimization
  15. Partitioned Mappings
  16. Developer Tool Naming Conventions

Developer Mapping Guide

Developer Mapping Guide

Pushdown Types

Pushdown Types

The Data Integration Service applies pushdown optimization to a mapping when you select the pushdown type in the mapping run-time properties.
You can select the following pushdown types:
  • None. Select no pushdown type for the mapping.
  • Source. The Data Integration Service tries to push down as much transformation logic as it can to the source database.
  • Full. The Data Integration Service pushes the full transformation logic to the source database.
You can also create a string parameter for the pushdown type and use the following parameter values:
  • Full
  • Source
  • None

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