Question

A weak entity type normally has a ______, which is a set of attribute that can uniquely identified weak entities that are related to the same owner entity.

• A. Particular key
• B. Partial key
• C. Secondary key
• D. Primary key

Answer 1

The correct option is B Partial key

A weak entity type normally has a partial key, which is a set of attribute that can uniquely identify weak entities that are related to same owner entity. Assuming that two support documents of a voucher do not have the same document Id, the said Id can be a good partial key.