Dictionary exchange schema

Describing an external file structure in the dictionary might be the most comfortable way for complex external data structures. External files can be defined as structure definitions in the dictionary. Structure definitions for external files may consist of attributes, references and exclusive base structures. External file definitions must not contain relationships.

Assigning a data source to a field in an external file is possible by means of the property source definition for properties. The first (and only) source definition for a property is considered as database location for the external field.