Question: The Project entity has a ProjectCode attribute. 1) Each project has at most one code. The ProjectCode attribute is _____. unique singular plural required optional

The Project entity has a ProjectCode attribute. 1) Each project has at most one code. The ProjectCode attribute is _____. unique singular plural required optional 2) Each project code describes at most one project. The ProjectCode attribute is _____. unique singular plural required optional 3) A project may have no code. The ProjectCode attribute is _____. unique singular plural required optional 4) ProjectCode is an identifying attribute of the Project entity. True False

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