Character Representation - Advanced SQL Engine - Teradata Database

Database Introduction

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
June 2020
Language
English (United States)
Last Update
2021-01-23
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dita:id
B035-1091
lifecycle
previous
Product Category
Teradata Vantageā„¢

Representing strings of characters is essentially a two-step process:

  • Creating a mapping between each character required and an integer.
  • Devising an encoding scheme for placing a sequence of numbers into memory.

The simplest systems map the required characters to small integers between 0 and 255, and encode sequences of characters as sequences of bytes with the appropriate numeric values.

Representing characters for repertoires that require more than 256 characters, such as Japanese, Chinese, and Korean, requires more complex schemes.