The relationships between objects are recorded and maintained in the relationship table (see Relationship table overview) which contains five field identifiers that can be used by the reporting system in Tabular reports. It also contains 48 relation constants (24 relation pairs), that are used to describe the relationship that exists between diagrams, symbols, and definitions. These relationships are used only in complex reports to move from the entity table to the relationship table and back.

A report should always begin and end in the entity table.