Users complain SQL statements using a particular index fail.

第1题：

Examine the command that is used to create a table： SQL> CREATE TABLE orders（oid NUMBER（6） PRIMARY KEY， odate DATE， ccode NUMBER （6）， oamtNUMBER（10，2）） TABLESPACE users； Which two statements are true about the effect of the above command（）

• A、A CHECK constraint is created on the OID column.
• B、A NOT NULL constraint is created on the OID column.
• C、The ORDERS table is the only object created in the USERS tablespace.
• D、The ORDERS table and a unique index are created in the USERS tablespace.
• E、The ORDERS table is created in the USERS tablespace and a unique index is created on the OID columnin the SYSTEM tablespace.

第2题：

You moved the index EMP_NO_INDX from one tablespace to another and then issued the following command to rebuild the index EMP_NO_INDX：   SQL> ALTER INDEX EMP_NO_INDX REBUILD ONLINE；   Which table allows the users to access the EMP_NO_INDX index while performing the rebuild operation？（） 

• A、 Index-organized table
• B、 Mapping Table
• C、 Clustered Table
• D、 Journal Table

第3题：

第4题：

You suspect unauthorized data manipulation language （DML） operations on a particular table. Youwant to track users who are performing the transactions and the values used in the transactions. You alsoplan to transfer these values to another table for analysis.  How would you achieve this（）

• A、by using triggers
• B、by using Data Pump
• C、by using external tables
• D、by using anonymous PL/SQL blocks

第5题：

You suspect unauthorized data manipulation language （DML） operations on a particular table. You want to track users who are performing the transactions and the values used in the transactions. Also， you plan to transfer these values to another table for analysis.  How would you achieve this？（）

• A、by using triggers
• B、by using external tables
• C、by using anonymous PL/SQL blocks
• D、by auditing all DML operations on the table

第6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

第7题：

Which of the following identifies and creates an index to minimize the DB time for a particular SQL statement？（）  

• A、 The SGA Tuning Advisor
• B、 The SQL Access Advisor
• C、 The SQL Tuning Advisor
• D、 The Memory Advisor

第8题：

第9题：

Examine the following statement that is used to modify the constraint on the SALES table： SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE； Which three statements are true regarding the above command（）

• A、The constraint remains valid.
• B、The index on the constraint is dropped.
• C、It allows the loading of data into the table using SQL*Loader.
• D、New data conforms to the constraint， but existing data is not checked
• E、It allows the data manipulation on the table using INSERT/UPDATE/DELETE SQL statements.

第10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.