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In a IS A hierarchy, which of the following is FALSE? There is no unique mapping between the is _ a hierarchy and the corresponding

In a IS A hierarchy, which of the following is FALSE?

There is no unique mapping between the is

_

a hierarchy and the corresponding relational schema

The subclasses should not have a key represented

The

"

_

"

hierarchy can be represented using a

1

:N relationship

All attributes in the superclass are inherited by all subclasses

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