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.
Omitting the column list in the REFERENCES clause implies that the foreign key shall reference the primary key of the referenced table. 1  ALTER TABLE <table identifier> ADD [ CONSTRAINT <constraint identifier> ] FOREIGN KEY ( <column expression> {, <column expression>}...