17.10 - Maintaining Foreign Key Integrity - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Advanced SQL Engine
Teradata Database
Release Number
Release Date
July 2021
Content Type
Programming Reference
Publication ID
English (United States)

Vantage verifies that the structure of columns defined as foreign keys, or referenced by foreign keys, is not changed in any manner that violates the rules for the definition of a foreign key constraint.

An ALTER TABLE (or DROP INDEX) request attempting to change the structure of such a column aborts and causes the system to return an error to the requestor.

Vantage verifies that a table referenced by another is not dropped. Before dropping the table, you must perform an ALTER TABLE request to drop the foreign key reference.