What is Talend Data Mapper?

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.

• 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 Introduction to Talend Data Mapper functions.
• An expression refers to the use of one or several functions to define the value of an element. For more information, see Standard map expressions.
• 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.