The TBX format is the default WorldServer format for importing and exporting terminology databases (TDs).
XCS (eXtensible Constraint Specification) is the TBX way of specifying constraints on metadata. It lists languages, data category names and permissible picklist values for a termbase file. In WorldServer terms, XCS lists the languages, attribute names and selector attribute values of a term database. TBX specifies a default XCS file with data category information based on a selection from ISO 12620, which in turn attempts to define a standard list of data category names and definitions. Having a substantial standard list to choose from gives terminology users a common vocabulary, greatly improving interoperability and blind interchange. WorldServer takes advantage of this common vocabulary where possible.
In this Import TBX into Term Database <TD> (Step 3 of 3) screen, you can create attributes on the fly to match data categories in the TBX import file that do not yet have a WorldServer equivalent. If these data categories are present in the default XCS file, WorldServer attempts to create attributes that correspond to its knowledge of these data categories. If the data category has a picklist data type, WorldServer prepopulates the attribute creation dialog with a selector attribute, its values already prefilled with the default XCS' definitions. Other data categories result in text fields. TBX import does not read the incoming TBX file's companion XCS file or enforce its constraints.
WorldServer imports the TBX file. You are done.