4846955
| Pregunta | Respuesta |
| What is an entity type? | Represents a physical or abstract concept with some sort of identity and some descriptive features. |
| What is an attribute? | The descriptive features of entities are called attributes. |
| What is an entity? | Corresponds to a set of entities having the same set of attributes. |
| What is a relationship type? | Represents a connection between two or more entity types. |
| What is a key? | An attribute that has unique values for every instance of an entity type. |
| What is a weak entity type? | Those that are meaningless without an owner entity type. |
¿Quieres crear tus propias Fichas gratiscon GoConqr? Más información.