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  1. Preface
  2. Data integration tasks
  3. Mapping tasks
  4. Dynamic mapping tasks
  5. Synchronization tasks
  6. Data transfer tasks
  7. Replication tasks
  8. Masking tasks
  9. Masking rules
  10. PowerCenter tasks

Tasks

Tasks

Field expressions

Field expressions

For some task types,
you can configure the field mapping. The field mapping defines how source fields are mapped to target fields. You can specify an expression for each field mapping.
You can map multiple source fields to the same target field. For example, you can map SourceFieldA and SourceFieldB to TargetFieldC.
Data Integration
might suggest operations when you map multiple source fields to a single target field. For example, if you map multiple text fields to a target text field,
Data Integration
concatenates the source text fields by default. You can change the default expression.
Data Integration
provides a transformation language that includes SQL-like functions to transform source data. Use these functions to write expressions, which modify data or test whether data matches the conditions that you specify.
For more information about functions and the
Data Integration
transformation language, see
Function Reference
.

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