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

Storage Table

Storage Table

The storage table contains the results of repeatable expression masking between sessions. A storage table row contains the source column and a masked value pair. The storage table for expression masking is a separate table from the storage table for substitution masking.
Each time the Data Masking transformation masks a value with a repeatable expression, it searches the storage table by dictionary name, locale, column name and input value. If it finds a row in the storage table, it returns the masked value from the storage table. If the Data Masking transformation does not find a row, it generates a masked value from the expression for the column.
You need to encrypt storage tables for expression masking when you have unencrypted data in the storage and use the same dictionary name as key.

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