Question: Each table in a relational database will have a primary key that creates the relationship between the tables - that why its called a relational

Each table in a relational database will have a primary key that creates the relationship between the tables - that why its called a relational database. The primary key is
redundant data
unique for every row (record)
unstructured
located in a field
Each table in a relational database will have a primary key

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