Talend Data Mapper allows you to
map complex data records and documents and execute transformations.
In the Mapping perspective of Talend Studio, you can create a map and
configure it by simply dragging and dropping the data from an input structure to an
output structure. For more complex mappings, you can create expressions, based on a
set of functions, to define the value of an element.
Core concepts
A structure defines the semantics of the data. It contains a root and a
hierarchy of elements. For more information, see Working with structures.
A representation contains the information needed to produce a structure for
a specific document format. The default representation is XML. For more
information, see Representations properties.
An element is a portion of a structure, an XML element or a database column,
for example.
A map is a transformation between an input and an output structure. For
more information, see Working with maps.
A function is a unit of code that accepts a fixed or variable number of
arguments and returns a single value. Functions are used to create
expressions. For more information, see the Talend Data Mapper Functions Reference Guide.
A loop is an expression that defines how to handle an element that can
occur several times in the same object. For more information, see Loop expressions.
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