【多选题】
A Unicode enables information from any language to be stored using a single character set
B Unicode is the only supported character set for Oracle databases created usingDatabaseConfiguration Assistant(DBCA)
C Single-byte character sets provide better performance than multibyte character sets
D Single-byte character sets always use 7-bit encoding schemes
E Multibyte character sets allow more efficient space utilization than single byte charactersets
F Single-byte character sets always use 8-bit encoding schemes.
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