17.10 - Table Column Definition and Constraint Abbreviations - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Database Design

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

The following set of abbreviations is used throughout this document to denote various characteristics of, or constraints on, table columns.

Abbreviation Definition
FK Foreign key
NC No changes allowed
ND No duplicates allowed
NN No nulls allowed
PK Primary key
SA System-assigned value
UA User-assigned value