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Unicode is a character encoding standard that has widespread acceptance. Microsoft software uses Unicode at its core. Whether you realize it or not, you are using Unicode already! Basically, âcomputers just deal with numbers. They store letters and other characters by assigning a number for each one.
NVARCHAR â Data is stored in a Unicode encoding. Every language is supported. A Good Idea. What about storage space? VARCHAR is generally efficient, since the character set / encoding was custom-designed for a specific locale. NVARCHAR fields store either in UTF-8 or UTF-16 encoding, base on the NLS setting ironically enough.