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Attribute Cardinality.pdf attribute domains.pdf attributes.pdf case tools.pdf compare to ER.pdf composite objects.pdf composite object-so.pdf compound objects-so.pdf defining semantic objects.pdf domain constraints.pdf entities.pdf entities with relational model.pdf entity integrity.pdf example design.pdf has a relation.pdf identifiers.pdf intro.pdf intro-so.pdf is-a relation.pdf key constraint.pdf many-many relationships.pdf many-many relationships-so.pdf Many to Many.pdf object identifiers_dot.pdf one_to_many.pdf one-many relationships.pdf one-many relationships-so.pdf one-one compound objects.pdf one-one compound objects-so.pdf one-to-many.pdf one to one.pdf other types.pdf paired attributes.pdf parent.pdf referential integrity.pdf relationships.pdf semantic objects.pdf Simple Objects.pdf soattributes.pdf subtype entities.pdf types.pdf using e-r.pdf using semantic-so.pdf views.pdf weak entities.pdf