SET SESSION CONSTRAINT Examples | Teradata Database - Constraint Definitions for the Examples - Teradata Database

The following constraint and user definitions are used for the examples that follow.

The following SQL text creates a hierarchical constraint named classification_level that enforces all four of the possible statement actions for a constraint.

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;

The following SQL text creates a non-hierarchical constraint named classification_category that enforces all four of the possible statement actions for a constraint.

CREATE CONSTRAINT classification_category BYTE(8),  
VALUES (nato:1, united_states:2, canada:3, united_kingdom:4,
        france:5, norway:6, russia:7), 
INSERT SYSLIB.insert_category,
UPDATE SYSLIB.update_category,
DELETE SYSLIB.delete_category,
SELECT SYSLIB.read_category;

Create user_name.

CREATE USER  user_name  AS
PERMANENT = 1e6, 
PASSWORD=my_pwd,
CONSTRAINT = classfication_level (top_secret),
CONSTRAINT = classification_category (united_states);

Create user pls.

CREATE USER  pls  AS
PERMANENT = 1e6, 
PASSWORD=secret,
CONSTRAINT = classification_level (secret, unclassified DEFAULT),
CONSTRAINT = classification_category (united_states);

The following SQL text creates user arn_anderson.

CREATE USER  arn_anderson  AS
PERMANENT = 1e6, 
PASSWORD=Arn2222ANDERSON,
CONSTRAINT = classification_category (norway);