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The Concept Map you are trying to access has information related to:
design using e-r, Database Design includes a role of Normalization, Weak Entities are ID dependent, Database Design include Representations, Relationships are IS-A Relation, Representations of Entities, HAS-A Relation includes one to many, Weak Entities are ID independent, HAS-A Relation includes many to many, Representations of Relationships, Relationships are HAS-A Relation