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.
Difference between Primary Key and Foreign Key. In SQL Server, there are two keys - primary key and foreign key which seems identical, but actually both are different in features and behaviours. In this article, I would like to share the key difference between primary key and foreign key.