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index很喜欢咬当麻。
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（ 16 ） 窗体上有一个名称为 Option 1 的单选按钮数组，程序运行时，当单击某个单选按钮时，会调用下面的事件过程Private Sub Option1_C1ick （ Index As Integer ）…End Sub下面关于此过程的参数 Index 的叙述中正确的是A ） Index 为 1 表示单选按钮被选中，为 O 表示未选中B ） Index 的值可正可负C ） Index 的值用来区分哪个单选按钮被选中D ） Index 表示数组中单选按钮的数量
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You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index.Which two are possible if table updates are performed which affect the invisible index columns?（）A. The index remains invisible.B. The index is not updated by the DML statements on the indexed table.C. The index automatically becomes visible in order to have it updated by DML on the table.D. The index becomes unusable but the table is updated by the DML.E. The index is updated by the DML on the table.
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窗体上有一个名称为Option1的单选按钮控件，当程序运行时，当单击某个单选按钮时，会调用下面的事件过程： Private Sub Option1 Click(Index As Integer) End Sub 下面关于此过程的参数Index的叙述中正确的是（ ）。A.Index为1表示单选按钮被选中，为0表示未选中B.Index的值可正可负C.Index的值用来区分哪个单选按钮被选中D.Index表示数组中单选按钮的数量
考题
变量定义语句Dim Index与下面的______等价。 ( )A．Dim Index As LongB．Dim Index As IntegerC．Dim Index As SingleD．Dim Index As Double
考题
当需要重建某个索引ix_customername,可以使用()方式。
A.ALTER INDEX ix_customername REBUILDB.ALTER INDEX ix_customername BUILDC.UPDATE INDEX ix_customername BUILDD.UPDATE INDEX ix_customername REBUILD
考题
Examine the following output： SQL SELECT index_name，status FROM dba_indexes WHERE status=’UNUSABLE’； INDEX_NAME STATUS------------------------------ ----------- EIND UNUSABLE Which two statements about the above index are true（）A、It is ignored by the query optimizer.B、It is not used while the index is being rebuilt.C、The index cannot be rebuilt， and has to be re-created.D、The index is automatically rebuilt when used the next time
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下列属于：eq（index）与：nth-child（index）的区别的有（）。A、：eq（index）只匹配一个元素，而：nth-child（index）将为每一个符合条件的父元素匹配子元素B、：eq（index）的index从0开始，而：nth-child（index）的index从1开始C、：eq（index）的index从1开始，而：nth-child（index）的index从0开始D、：eq（index）匹配多个元素，而：nth-child（index）将为每一个符合条件的父元素匹配子元素
考题
You are a DBA of your company. You created a database named SALES on an Oracle 10g instance. You have defined an index named INDEX1 on the database table named INVENTORY. Users are complaining that queries accessing the INVENTORY table are running slow. Upon investigation you determine that the tablespace where the index is located is experiencing high I/O and you decide to relocate the index to another tablespace. Which of these will be the best way to accomplish this objective？（）A、 Rebuild the index.B、 Coalesce the index.C、 Drop and re-create the index in the new tablespace.D、 Relocate the index using the ALTER INDEX...MOVE statement.
考题
An index called ORD_CUSTNAME_IX has been created on the CUSTNAME column in the ORDERS table using the following command： SQLCREATE INDEX ord_custname_ix ON orders（custname）； The ORDERS table is frequently queried using the CUSTNAME column in the WHERE clause. You want to check the impact on the performance of the queries if the index is not available. You do not want the index to be dropped or rebuilt to perform this test. Which is the most efficient method of performing this task？（）A、 disabling the indexB、 making the index invisibleC、 making the index unusableD、 using the MONITORING USAGE clause for the index
考题
为了监视索引的空间使用效率，可以首先分析该索引的结构，使用（）语句，然后查询INDEX_STATE视图。A、SELECT INDEX … VALIDATE STRUCTUREB、ANALYZE INDEX … VALIDATE STRUCTUREC、UPDATE INDEX … VALIDATE STRUCTURED、REBUILD INDEX … VALIDATE STRUCTURE
考题
In which scenarios would you rebuild an index？（）A、 when you need to disable the index usageB、 when you need to change storage optionsC、 when you need to enable index monitoringD、 when you need to move the index to another tablespace
考题
当需要重建某个索引ix_customername，可以使用（）方式。A、ALTER INDEX ix_customername REBUILDB、ALTER INDEX ix_customername BUILDC、UPDATE INDEX ix_customername BUILDD、UPDATE INDEX ix_customername REBUILD
考题
A bitmap join index is defined as（）.A、An index used to join two bitmap indexes on a table.B、A bitmap index created for the join of two or more tables.C、A bitmap index created on the join of two or more indexes.D、A bitmap index created on the join of two or more indexed-organized tables.
考题
You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index. Which two are possible if table updates are performed which affect the invisible index columns?（）A、The index remains invisible.B、The index is not updated by the DML statements on the indexed table.C、The index automatically becomes visible in order to have it updated by DML on the table.D、The index becomes unusable but the table is updated by the DML.E、The index is updated by the DML on the table.
考题
单选题为了监视索引的空间使用效率，可以首先分析该索引的结构，使用（）语句，然后查询INDEX_STATE视图。A
SELECT INDEX … VALIDATE STRUCTUREB
ANALYZE INDEX … VALIDATE STRUCTUREC
UPDATE INDEX … VALIDATE STRUCTURED
REBUILD INDEX … VALIDATE STRUCTURE
考题
判断题index很喜欢咬当麻。A
对B
错
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