Antidiuretic hormone (ADH, vasopressin) is produced by the supraoptic and paraventricular nuclei of the hypothalamus and travels in the axons through the pituitary stalk to the posterior pituitary gland.
What is a foreign key in SQL Server? A foreign key is a way to enforce referential integrity within your SQL Server database. A foreign key means that values in one table must also appear in another table. The referenced table is called the parent table while the table with the foreign key is called the child table.
When referential integrity is enforced, you must observe the following rules: 1  You cannot enter a value in the foreign key column of the related table if that value does not exist in the primary key of the related table.  You cannot delete a row from a primary key table if rows matching it exist in a related table.