The primary key $($PK$)$ of a table is often named after the table. Example: ISBN$-13$ is chosen as the name of the primary key for the Book table; PublisherID is the PK of the Publisher table. You could also abbreviate the table prefix when deciding on an attribute name $($e$.$g$.,$ PubID$).$

For each entity set in the table below, give the primary key attribute$($s$)$ and the foreign key attribute$($s$)($if any$).$ Use Figure $1.$ Publisher Database for reference to the ER modeling objects and relationships.