The abstract data types supported for data linkage by Datareplicator include SGMLTEXT, FREEWORD, and XML. Data linkage is supported for abstract data types only between HiRDB data linkage systems.

To link data with an abstract data type, the source and target systems must satisfy the following conditions:

• The source and target databases are both HiRDB.
• The columns at the source and the target must both be of the abstract data type.
• The definition of the abstract data type (such as type name, number of attributes, and attribute data type) must be identical at the source and target.
• The abstract data type's owner (authorization identifier) must be identical at the source and target.
• The definition of the constructor function for the abstract data type must be identical at the source and target.
• Only one argument is passed to a constructor function.
• The definitions specific to the HiRDB plug-in's abstract data type must be identical at the source and target.
• The document type definitions match between the source and the target (applies only to the SGMLTEXT type).
• The character encoding matches between the source and the target (applies only to the XML type).

Note:

Datareplicator does not check that these conditions are satisfied. The target HiRDB's data compatibility checking can determine whether valid data has been imported. If data import into the target HiRDB results in an error, Datareplicator outputs an error message and terminates import processing. The error handling procedure is the same as when compatibility checking on existing data types results in an error.