A. Create new indexes.
B. Modify existing indexes.
C. Implement partitioning on a nonpartitioned table.
D. Create materialized views.
E. All of the above
第1题:
A new report process containing a complex query is written, with high impact on the database. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task?()
A. Execute the query and view Active Session History (ASH) for information about the query.
B. Enable SQL trace for the query.
C. Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.
D. Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.
第2题:
You will want two trees about ten feet apart, from _____ to suspend your tent.
(A) there (C) which
(B) them (D) where
选D
可改写为you will want two tress about ten feet apart, to suspend your tent from.
只要有介词摆在空格之前,选项是which, them ,there ,where肯定是which
介词+which+动词不定式,整体做定语
第3题:
You will want two trees about ten feet apart, from _____ to suspend your tent.
(A) there (C) which
(B) them (D) where
选择D
可改写为you will want two tress about ten feet apart, to suspend your tent from.
只要有介词摆在空格之前,选项是which, them ,there ,where肯定是which
介词+which+动词不定式,整体做定语
第4题:
在SQL查询中,若要取得“学生”数据表中的所有记录和字段,其SQL语法为( )。
A.SELECT*FROM学生
B.SELECT姓名FROM学生
C.SELECT姓名FROM学生WHILE学号=02650
D.SELECT*FROM学生WHILE学号=02650
第5题:
在SQL查询中,若要取得“学生”数据表中的所有记录和字段,其SQL语法为( )。
A.SELECT姓名FROM学生
B.SELECT*FROM学生
C.SELECT姓名FROM学生WHERE学号=02650
D.SELECT*FROM学生WHERE学号=02650
第6题:
在SQL查询中,若要取得“学生”数据表中的所有记录和字段,其SQL语法为( )。
A)SELECT姓名FROM学生
B)SELECT*FROM学生
C)SELECT姓名FROM学生WHERE学号=02650
D)SELECT*FROM学生WHERE学号=02650