Question: Choose all that is correct about an entity type key Group of answer choices Is represented by an oval and its name is underlined by

Choose all that is correct about an entity type key
Group of answer choices
Is represented by an oval and its name is underlined by a dashed line
Is unique for every row. That is, no two rows can have the same key value
Can only be of type integer. This way consecutive numbers can be used
Is represented by an oval and its name is underlined by a solid line
Can be NULL

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