Structure of the Catalogue Database

Catalogues are constructed as a hierarchy of elements. Each element has certain attributes and some may contain further member elements. The complete Catalogue hierarchy is shown in the illustration.

Note: In any discussion of attributes which may appear in the rest of this chapter, the ‘standard’ attributes of TYPE, NAME, OWNER and LOCK will not be mentioned, as these are common to all the elements described below.

In addition, User Defined Attributes (UDAs) and User Defined Element Types (UDETs) may be used with Catalogue database elements.

Figure 4:2. The Catalogue Database Hierarchy