单项选择题
A. All objects in the database
B. Tables owned by SYS and SYSTEM
C. Data dictionary tables
D. NCHAR columns
E. CHAR columns
单项选择题 Which NLS parameter can be used to change the default Oracle sort method from binary to linguistic for the SQL SELECT statement?（）
单项选择题 Which of the following NLS_SORT parameter values would result in case-insensitive and accent-insensitive binary sorts?（）
单项选择题 Automatic data conversion will occur if which of the following happens?（）