Answering SPJA queries under differential privacy (DP), including graph-pattern counting under node-DP as an important ...

In the school example, the primary key used to identify each member of staff in the teacher table is Staff ID. A foreign key is a primary key from one table that appears in another table to link ...

In SQL 7 you need an OrderDetailID as the Primary Key to uniquely identify each row in the table. In addition you have the OrderID field which serves as the Foreign Key to the Orders table. This lets ...