單項(xiàng)選擇題

Which of the following NLS_SORT parameter values would result in case-insensitive and accent-insensitive binary sorts?（）

A. NLS_SORT = BINARY
B. NLS_SORT = BINARY_AI
C. NLS_SORT = BINARY_CI
D. NLS_SORT = BINARY_AI_CI
E. Binary sorts are case insensitive and accent insensitive by default.

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單項(xiàng)選擇題

Automatic data conversion will occur if which of the following happens?（）

A. The client and server have different NLS_LANGUAGE settings.
B. The client and server character sets are not the same, and the database character set is not a strict superset of the client character set.
C. The client and server are in different time zones.
D. The client requests automatic data conversion.
E. The AUTO_CONVERT initialization parameter is set to TRUE.

單項(xiàng)選擇題

In a database with the database character set of US7ASCII and a national character set of UTF-8, which datatypes would be capable of storing Unicode data by default?（）

A. VARCHAR2
B. CHAR
C. NVARCHAR2
D. CLOB
E. LONG