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An attribute is, abstractly speaking, a piece of information about an entity. For example, an EOEntity may represent a person. The first name of the person is an attribute. The zip code of the person's address may be an attribute. An attribute is represented in EOF as a com.webobjects.eoaccess.EOAttribute instance. If an entity's information comes strictly from a table, then an attribute will be the object representation of a column. A relationship in an entity may also be an attribute of the entity.