A single database wide name scope is provided. Application defined name scopes are supported. Integrity Supports uni-directional relationships. Supports bi-directional relationships. Bi-directional relationships ensure referential integrity.
Referential integrity is assured for all relationship forms via tombstones.
Referential integrity is assured by only deleting objects when all references to that object have been removed. A.1.2.2 Composite Objects Supports equality operations across composite objects. Supports copy operations across composite objects. Supports delete operations across composite objects. Supports lock operations across composite objects.