Database Dictionary Table Updates | Teradata Vantage - 17.10 - Updating Tables - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Data Dictionary

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

When a data definition statement is processed, the system tables are updated automatically.

When a table is changed by an ALTER, CREATE, DROP, or RENAME statement, Vantage automatically increments the version count for that table. For more information about creating, changing, and dropping tables, see Teradata Vantageā„¢ - SQL Data Definition Language Detailed Topics, B035-1184.

Most tables cannot be altered using INSERT or UPDATE, or DELETE SQL statements; however, Data Dictionary tables in the form of logs can be modified. See Data Dictionary Logs that Require Manual Purging for more information. Also, the object use count feature allows the AccessCount and LastAccessTimeStamp columns to be updated through SQL in the following dictionary tables: Dbase, TVM, TVFields, and Indexes.