Maintaining Foreign Key Integrity - Analytics Database - Teradata Vantage

SQL Data Definition Language Detailed Topics

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-07-11
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B035-1184
lifecycle
latest
Product Category
Teradata Vantage™

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.