16.10 - Referenced (Parent) Table - Teradata Database

Teradata Database SQL Fundamentals

Product
Teradata Database
Release Number
16.10
Published
June 2017
Language
English (United States)
Last Update
2018-04-25
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A child table must have a parent, and the referenced table is referred to as the parent table.

The parent key columns in the parent table are the referenced columns.

For standard and batch RI, the referenced columns must be one of the following unique indexes:

  • A unique primary index (UPI), defined as NOT NULL
  • A unique secondary index (USI), defined as NOT NULL

Soft RI does not require any index on the referenced columns.