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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.
UTF-8 is the 8-bit encoding of Unicode. It is a variable-width encoding and a strict superset of ASCII. This means that each and every character in the ASCII character set is available in UTF-8 with the same code point values. One Unicode character can be 1 byte, 2 bytes, 3 bytes, or 4 bytes in UTF-8 encoding.f you want to add Unicode support to the existing database without migrating the character set, then consider using Unicode datatypes to store Unicode data. You can add columns of the SQL NCHAR datatypes to existing tables or new tables to support multiple languages incrementally.