Tables are automatically created to store the extended features.

New tables are created for new aggregated elements, whereas added features of existing base classes are stored in a SIBLING table.

For instance, for the ruleArtifact class there are two database tables:

Some classes may derive from the ruleArtifact class and define features that were not defined in the basic class. Instances of the basic class will fill the RULEARTIFACTSIBLING table with NULL values, whereas instances of the derived class will use these columns.

Related Reference