unit of service. unit of service. any individual, family, aggregate, organization, or community given nursing care. The level at which service is delivered varies with the particular unit entity.
A foreign affiliate as defined in inward FATS statistics is an enterprise resident in a country which is under the control of an institutional unit not resident in the same country. Control is determined according to the concept of the 'ultimate controlling institutional unit' (UCI).
Foreign Keys and Referential Integrity. A foreign key relationship allows you to declare that an index in one table is related to an index in another and allows you to place constraints on what may be done to the table containing the foreign key.The database enforces the rules of this relationship to maintain referential integrity.oreign Keys and Referential Integrity. A foreign key relationship allows you to declare that an index in one table is related to an index in another and allows you to place constraints on what may be done to the table containing the foreign key.