HP 3000 Manuals HP 3000 Manuals
Relationship Classes A relationship class is a name in the dictionary structure that you can use to express the action or connection of a relationship type. See the Syntax discussion in Chapter 2 for more information on relationship class names. The System Dictionary core set contains several commonly used relationship classes. You can add relationship classes to the dictionary, and you can change external names of the core set classes. In System Dictionary, relationship types belong to a relationship class. For example, it is possible to retrieve all the relationship types that belong to a relationship class. To get a list of all the relationship types in the dictionary, you must first get the list of relationship classes and retrieve the relationship types of each class. You can create, delete,modify, and retrieve a relationship class. The actual instructions for doing these operations are located in other HP System Dictionary/XL manuals. Refer to the HP System Dictionary/XL SDMAIN Reference Manual (32256-90001) for instructions to do these operations with the System Dictionary user interface, or to the HP System Dictionary/XL Intrinsics Reference Manual (32256-90002), if using the System Dictionary intrinsics. You cannot delete a relationship class without explicitly requesting the deletion of all the relationship types of that class.