Data Transformation System, Graphical Mapping Tool, and Method for Creating a Schema Map

Graphical mapping interface embodiments and method are provided for creating and displaying a schema map, which may be used by a data transformation system to perform a data transformation between at least one source schema and at least one target schema. According to one embodiment, the graphical mapping interface may comprise a source schema region for displaying a graphical representation of at least one source schema, a target schema region for displaying a graphical representation of at least one target schema, and a mapping region for displaying graphical representations of a plurality of links connecting the source nodes displayed in the source schema region to the target nodes displayed in the target schema region. The plurality of links may comprise at least one control link having at least one ECA rule associated therewith and at least one data link having at least one textual-based target field expression associated therewith.