16.20 - Restrictions on Redefining Characters - Teradata Vantage NewSQL Engine

Teradata Vantageā„¢ NewSQL Engine International Character Set Support

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
created_date
March 2019
category
Configuration
User Guide
featnum
B035-1125-162K

Site-defined character set restrictions for networked and mainframe clients are described in the following sections.

Network clients use ASCII-compatible character sets and mainframe clients are often EBCDIC-based.

ASCII

Site-defined character sets based on the ASCII character set must preserve the definition of code points 0-127. This means that you may only redefine those characters whose numeric value is 128 or greater.

EBCDIC

When you create a custom character set based on the EBCDIC character set, you must retain a certain subset of the EBCDIC characters. The required characters are identified as shaded code points in the table.

The shaded code points must remain as defined, and the site-defined translation tables must map these code points into the correct internal Teradata Database representations.