32。Which two are true about the character sets used in an Oracle database（）?
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 using DatabaseConfiguration 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 character sets.
F、Single-byte character sets always use 8-bit encoding schemes.

答案:AC

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