Object codes
Bar codes
References
Notes
（）are often used to organize and index the information or prices of objects.A、Object codesB、Bar codesC、ReferencesD、Notes
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Which command can be used to display information from the PvDv object class in the ODM？（） A、odmlistB、odmshowC、lsdev -PD、lsattr -El
Given： foo and bar are public references available to many other threads， foo refers to a Thread and bar is an Object. The thread foo is currently executing bar.wait（）. From another thread， what provides the most reliable way to ensure that foo will stop executing wait（）？（）A、foo.notify（）；B、bar.notify（）；C、foo.notifyAll（）；D、Thread.notify（）；E、bar.notifyAll（）；F、Object.notify（）；
int index = 1； int foo = new int ； int bar = foo [index]； int baz = bar + index； What is the result？（）A、 Baz has the value of 0B、 Baz has the value of 1C、 Baz has the value of 2D、 An exception is thrown.E、 The code will not compile.
You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used. Which method would you follow to achieve this？（）A、enable index monitoring and query the DBA_OBJECTS viewB、enable index monitoring and query the DBA_INDEXES viewC、enable index monitoring and query the V$OBJECT_USAGE viewD、enable index monitoring and view the DBA_INDEXTYPE_COMMENTS view
The customer and order tables are often used in joins， thereby resulting in complex queries. You created views to simplify the writing of queries. These views are stored in（）.A、user tablesB、view segmentC、table segmentD、data dictionaryE、object segmentF、performance tables
The InnoDB engine has a feature known as clustered indexes. Which three statements are true about clustered indexes as used in InnoDB?（）A、A primary key must exist for creation of a clustered indexB、A clustered index allows fulltext searching within InnoDBC、The first unique index is always used as a clustered index and not a primary keyD、A clustered index provides direct access to a page containing row dataE、If no indexes exist, a hidden clustered index is generated based on row IDsF、A primary key is used as a clustered indexG、A clustered index is a grouping of indexes from different tables into a global index for faster searching
