Explain the di?erence between ODMG attributes and relationships.
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ODMG distinguishes between attributes and relationships. An attribute refers to some value (not an object) that is stored within the object being speci?ed. A relationship refers to some other object stored in the database and speci?es how that object is related to the object being speci?ed. For instance, the Person de?nition includes two relationships. The Spouse relationship refers to another Personobject, (stored separately) that correspond to its spouse. The Child relationship refers to the set of Person objects (also stored separately) that correspond to its children.
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