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.
In other words, if we had a table A with a primary key X that linked to a table B where X was a field in B, then X would be a foreign key in B. An example might be a student table that contains the course_id the student is attending. Another table lists the courses on offer with course_id being the primary key.