Table of Contents

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  1. Preface
  2. Introduction to Test Data Management
  3. Test Data Manager
  4. Projects
  5. Policies
  6. Data Discovery
  7. Data Subset
  8. Data Masking
  9. Data Masking Techniques and Parameters
  10. Data Generation
  11. Data Generation Techniques and Parameters
  12. Working with Test Data Warehouse
  13. Plans and Workflows
  14. Monitor
  15. Reports
  16. ilmcmd
  17. tdwcmd
  18. tdwquery
  19. Data Type Reference
  20. Data Type Reference for Test Data Warehouse
  21. Glossary

Rules and Guidelines for Expression Masking

Rules and Guidelines for Expression Masking

Use the following rules and guidelines for expression masking:
  • You cannot use the output from an expression as input to another expression. If you manually add the output column name to the expression, you might get unexpected results.
  • Select functions, columns, variables, and operators from the point-and-click interface to minimize errors when you build expressions.
  • If the data masking rule is configured for repeatable masking, specify the storage table in the data masking plan. If the storage table does not exist, the data masking operation fails.