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Este Cmap, tiene informaciĆ³n relacionada con: ENTITY RELATIONS, One to several or several to one ???? determination that a record of one entity may be related to several records of another entity., Cardinality relationships ???? Several to several, Cardinality relationships ???? One to several or several to one, ENTITY RELATIONSHIPS Elements of the entity-relationship model Relationship, Several to several ???? determines that an entity can relate to another with one or more records and on the contrary., Cardinality relationships ???? One and only one, One and only one ???? An entity related to other one and on the contrary., Attributes ???? They define or identify entity characteristics (it is the content of this entity)., ENTITY RELATIONSHIPS It is a model that has a diagram that helps to understand the data and how they relate to each other, must be completed with a short summary with the list of attributes and relationships of each element., Entity ???? Entities represent things or objects (whether real or abstract), ENTITY RELATIONSHIPS Elements of the entity-relationship model Attributes, ENTITY RELATIONSHIPS Elements of the entity-relationship model Entity, ENTITY RELATIONSHIPS Cardinality relationships, Relationship ???? It is a link that allows us to define a dependency between several entities.