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  1. Preface
  2. Function reference
  3. Constants
  4. Operators
  5. Dates
  6. Functions
  7. System variables
  8. Datatype reference

Function Reference

Function Reference

Datatype reference overview

Datatype reference overview

When you create a mapping or task, you create a set of instructions for
Data Integration
to read data from a source and write it to a target.
Data Integration
transforms data based on the data flow and the datatype assigned to each field.
Data Integration
uses the following types of datatypes:
Native datatypes
Native datatypes are specific to sources, targets, and lookup objects in a mapping or task. In a mapping, native datatypes appear in the sources, targets, and lookup objects.
Transformation datatypes
Transformation datatypes are internal datatypes that appear in all transformations in a mapping. They are based on ANSI SQL-92 generic datatypes.
Data Integration
uses transformation datatypes to move data across platforms.
In tasks that move data without transforming it,
such as
replication
tasks,
Data Integration
converts the native datatypes from the source to the comparable native datatypes in the target. In mappings and
mapping
tasks,
Data Integration
converts the native datatypes from the source to the comparable transformation datatypes before it starts transforming the data. When
Data Integration
writes to a target, it converts the transformation datatypes to the comparable native datatypes.
When you specify a multibyte character set, the datatypes allocate additional space in the database to store characters of up to three bytes.

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