Data Transformation Engine Design Studio Tutorial

Chapter 1 - Mapping Basics Starting the Map Designer
Design Studio Tutorial
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A map defines input and output specifications. The ContactToLabel map uses the
Contact.txt input file and produces the Label.txt output file.
Each input and output card represents one data object, identified by selecting a
type from a type tree. A card may represent an object in a row, a row in a record,
the entire record, or the entire file.
Each card specifies a type tree and a type as part of the card definition. This type,
and the type tree that contains it, is the link between the Type Designer and the
Map Designer that defines the structure and properties of the data in the card.
♦ Input cards represent input data.
♦ Output card represent output data and contains the map rules that transform
that data. Therefore, only the output card has a rule column.
Each card specifies a name, a type tree and a type as part of the card definition.
The name of the input card can be anything. In this case, the name of the input
card is ContactFile, which describes the data object it represents. Each card
represents one data object, identified by selecting a type from a type tree. The
ContactFile input card specifies the Contact.mtt type tree and the
ContactFile Data type (the ContactFile group type is a subtype of Data). This
type, and the type tree that contains it, is the link between the Type Designer and
the Map Designer that defines the structure and properties of the data in the card.