CREATE CONSTRAINT Examples | Teradata Vantage - Example: Creating a Constraint Object for a Hierarchical Classification - Advanced SQL Engine - Teradata Database

SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.00
Published
September 2020
Language
English (United States)
Last Update
2021-01-23
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B035-1144
lifecycle
previous
Product Category
Teradata Vantage™

The following CREATE CONSTRAINT request defines values and enforcements for a hierarchical (level) classification system, within which the values are hierarchically related.

     CREATE CONSTRAINT classification_level SMALLINT, NOT NULL,
     VALUES (top_secret:4, secret:3, confidential:2, unclassified:1), 
     INSERT SYSLIB.insert_level,
     UPDATE SYSLIB.update_level,
     DELETE SYSLIB.delete_level,
     SELECT SYSLIB.read_level;