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English
  • Common Content for Data Engineering 10.2.1
  • All Products

Table of Contents

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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

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Configuring a Dynamic Source

Configuring a Dynamic Source

You can configure the Read and Lookup transformations in a mapping to dynamically update metadata, including column names, when transformation sources change.
When you configure Read and Lookup transformations for a dynamic mapping, you can use one or more of the following methods:
Use a parameter as a source
When you use a parameter value as a source for a Read or Lookup transformation, you choose a parameter name that references a source data object that you defined elsewhere in the repository.
Configure Read and Lookup transformations to get metadata at run time
When you configure Read or Lookup transformations to get data object columns from a source at run time, the mapping refreshes the port definitions when the mapping runs.
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