Table of Contents

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  1. Preface
  2. Introduction to Data Transformation
  3. Data Processor Transformation
  4. Wizard Input and Output Formats
  5. Relational Input and Output
  6. Using the IntelliScript Editor
  7. XMap
  8. Libraries
  9. Schema Object
  10. Command Line Interface
  11. Scripts
  12. Parsers
  13. Script Ports
  14. Document Processors
  15. Formats
  16. Data Holders
  17. Anchors
  18. Transformers
  19. Actions
  20. Serializers
  21. Mappers
  22. Locators, Keys, and Indexing
  23. Streamers
  24. Validators, Notifications, and Failure Handling
  25. Validation Rules
  26. Custom Script Components

Data Transformation User Guide

Data Transformation User Guide

Restrictions on the Key

Restrictions on the Key

The
unique_fields
must be nested within the
recurring_element
. They can be attributes of the element, they can be nested elements at any level of nesting, or they can be attributes of the nested elements.
For example, this means that
Persons/Person/SocialSecurity/@Number
can be a valid key for
Persons/Person
, because
@Number
is nested within
Persons/Person
. On the other hand,
Persons/Child
is not a valid key for
Persons/Person
because it is not correctly nested.
The
unique_fields
must identify the closest ancestor that can have multiple occurrences. For example, if both
Parent
and
Child
are multiple-occurrence elements, then
Parent/Child/@name
can be a valid key for
Parent/Child
but not for
Parent
.
The
unique_fields
must have simple data types. They cannot be structures.


Updated September 26, 2018