多项选择题
A. WHERE clause WHERE
B. ORDER BY clause
C. BETWEEN clause
D. NLSSORT function
E. NLS_SORT function
多项选择题 Given two different character sets (A and B), which of the following must be true for A to be considered a strict superset of B?（）
多项选择题 What elements of globalization can be explicitly defined using the NLS_LANG environment variable?（）
单项选择题 Globalization support is implemented through the text- and character-processing functions provided by which Oracle feature?（）