Which are the cons of an independent travel
A. No flexibility to make side trips
B. Time-consuming preparation
C. No freedom to choose where you stay
D. Possible language barriers
E. No freedom to get out and explore on your own
F. Unexpected problems and difficulties
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(P210) SectionA Pre-reading activities选择合适的选项填空。[音频]A joy and happinessB reactionsC liked mostD happyE obey
MySQL中存储用户全局权限的表是( )。
A. columns_priv
B. tables_priv
C. procs_priv
D. user
在MySQL中,可以使用( )语句来实现权限的撤销。
A. DROP
B. DELETE
C. REVOKE
D. GRANT