单项选择题
A. NLS_LANG
B. NLS_COMP
C. NLS_SORT
D. None of the above
单项选择题 WhichofthefollowingNLS_SORTparametervalueswouldresultincase-insensitiveandaccent-insensitivebinarysorts？（）
单项选择题 Automaticdataconversionwilloccurifwhichofthefollowinghappens？（）
单项选择题 InadatabasewiththedatabasecharactersetofUS7ASCIIandanationalcharactersetofUTF-8，whichdatatypeswouldbecapableofstoringUnicodedatabydefault？（）