Table of Contents

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  1. Preface
  2. Working with Transformations
  3. Aggregator Transformation
  4. Custom Transformation
  5. Custom Transformation Functions
  6. Data Masking Transformation
  7. Data Masking Examples
  8. Expression Transformation
  9. External Procedure Transformation
  10. Filter Transformation
  11. HTTP Transformation
  12. Identity Resolution Transformation
  13. Java Transformation
  14. Java Transformation API Reference
  15. Java Expressions
  16. Java Transformation Example
  17. Joiner Transformation
  18. Lookup Transformation
  19. Lookup Caches
  20. Dynamic Lookup Cache
  21. Normalizer Transformation
  22. Rank Transformation
  23. Router Transformation
  24. Sequence Generator Transformation
  25. Sorter Transformation
  26. Source Qualifier Transformation
  27. SQL Transformation
  28. Using the SQL Transformation in a Mapping
  29. Stored Procedure Transformation
  30. Transaction Control Transformation
  31. Union Transformation
  32. Unstructured Data Transformation
  33. Update Strategy Transformation
  34. XML Transformations

Transformation Guide

Transformation Guide

Lookup and Update Strategy Transformations

Lookup and Update Strategy Transformations

When you create a mapping with a Lookup transformation that uses a dynamic lookup cache, you must use Update Strategy transformations to flag the rows for the target tables. When you configure a session using Update Strategy transformations and a dynamic lookup cache, you must define certain session properties.
You must define the Treat Source Rows As option as Data Driven. Specify this option on the Properties tab in the session properties.
You must also define the following update strategy target table options:
  • Select Insert
  • Select Update as Update
  • Do not select Delete
These update strategy target table options ensure that the Integration Service updates rows marked for update and inserts rows marked for insert.
If you do not choose Data Driven, the Integration Service flags all rows for the database operation you specify in the Treat Source Rows As option and does not use the Update Strategy transformations in the mapping to flag the rows. The Integration Service does not insert and update the correct rows. If you do not choose Update as Update, the Integration Service does not correctly update the rows flagged for update in the target table. As a result, the lookup cache and target table might become unsynchronized.

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