Foreign keys are columns or combinations of columns that reference the primary key or a unique key of another table. They establish a relationship between two tables and ensure that the values in ...

To create a table with a primary key, you need to specify the name of the table, the columns and their data types, and the primary key constraint. The primary key constraint can be defined either ...

Creating a new table with a foreign key requires CREATE TABLE permission in the database, and ALTER permission on the schema in which the table is being created. Creating a foreign key in an existing ...