Double-byte character set
Double-Byte Character Set. In countries where an alphabet is not used, characters are used to represent words. Since a single-byte character set (SBCS) can have at most 256 characters, a double-byte character set, using two bytes, is used. This provides for 256 times 256 (65,536) possible characters. DBCS requires special processing for optimization, as DBCS fields and characters are specified using special orders.
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