Identity Columns - Analytics Database - Teradata Vantage

Database Introduction

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
2023-09-27
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lifecycle
latest
Product Category
Teradata Vantageā„¢

Identity columns are columns that have unique values for every row in the table. Because those values confer uniqueness on every row, the system can use the values to identify each row in a table. When a column is defined as an identity column, Vantage automatically generates a unique numeric value for the column in every row added to the table.

Identity columns can be used to generate unique values for UPI, USI, and primary key columns. However, instead of adding identity columns for this purpose, Teradata recommends creating a UPI from a combination of frequently queried columns

For more information about indexes, see Indexes.