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  SQL Server Tips by Gama and Naughter

The Unicode Character Set

This unified character set is the result of the work of the Unicode Consortium and the

International Organization for Standardization (ISO). The former developed the Unicode Project and the latter the ISO 10646 project but they merged onto one.

In Unicode, each character maps to a Unicode code point. The rendered version of the character is called glyph and one glyph or more glyphs can be depicted to represent one character. Unicode is not a 16 or 32 bit code, each Unicode code point is an abstract entity and there is no limit to the number of characters mapped. The current Unicode standard version 4.0 defines less than 100,000 code points, divided in 17 planes with 65,536 code points each. Plane 0 has characters for most of the modern languages and it is called the BMP (Basic Multilingual Plane).

The above book excerpt is from:

Super SQL Server Systems
Turbocharge Database Performance with C++ External Procedures

ISBN: 0-9761573-2-2
Joseph Gama, P. J. Naughter  


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