Examine the contents of SQL loa

题目

Examine the contents of SQL loader control file: Which three statements are true regarding the SQL* Loader operation performed using the control file?()

  • A、An EMP table is created if a table does not exist. Otherwise, if the EMP table is appended with the loaded data.
  • B、The SQL* Loader data file myfile1.dat has the column names for the EMP table.
  • C、The SQL* Loader operation fails because no record terminators are specified.
  • D、Field names should be the first line in the both the SQL* Loader data files.
  • E、The SQL* Loader operation assumes that the file must be a stream record format file with the normal carriage return string as the record terminator.
参考答案和解析
正确答案:A,B,E
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相似问题和答案

第1题:

View the Exhibit exhibit1 to examine the series of SQL commands. View the Exhibit exhibit2 to examine the plans available in the SQL plan baseline. The baseline in the first row of the Exhibit is created when OPTIMIZER_MODE was set to FIRST_ROWS.Which statement is true if the SQL query in exhibit1 is executed again when the valueof OPTIMIZER_MODE is set to FIRST_ROWS?()

A. The optimizer uses a new plan because none of the plans in the exhibit2 are fixed plans.

B. The optimizer uses the plan in the second row of the exhibit2 because it is an accepted plan.

C. The optimizer uses the plan in the first row of the exhibit2 because it is the latest generated plan.

D. The optimizer uses the plan in the first row of the exhibit2 because OPTIMIZER_MODE was set to FIRST_ROW during its creation.


参考答案:B

第2题:

Examine the structure of the STUDENTS table:You need to create a report of the 10 students who achieved the highest ranking in the course INT SQL and who completed the course in the year 1999.Which SQL statement accomplishes this task?()

A.

B.

C.

D.


参考答案:D

第3题:

Examine the following commands and their output:SQL> SELECT ename, sal FROM emp WHERE ename=‘JAMES‘; ENAME SAL JAMES 1050QL> UPDATE emp SET sal=sal+sal*1.2 WHERE ename=‘JAMES‘;1 row updated.SQL> SELECT ename, sal FROM emp WHERE ename=‘JAMES‘; ENAME SAL JAMES 2310View the exhibit and examine the Flashback Version Query that was executed after the preceding commands.What could be the possible cause for the query not displaying any row?()

A. Flashback logging is not enabled for the database.

B. The changes made to the table are not committed.

C. Supplemental logging is not enabled for the database.

D. The database is not configured in ARCHIVELOG mode.


参考答案:B

第4题:

Examine the data from the ORDERS and CUSTOMERS table.Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?()

A.

B.

C.

D.


参考答案:B

第5题:

Examine the SQL statements that creates ORDERS table:For which columns would an index be automatically created when you execute the above SQL statement? ()

A. SER_NO

B. ORDER_ID

C. STATUS

D. PROD_ID

E. ORD_TOTAL

F. Composite index on ORDER_ID and ORDER_DATE


参考答案:A, F

第6题:

Examine the data from the ORDERS and CUSTOMERS tables.Evaluate the SQL statement:What is the result when the query is executed?()

A.

B.

C.

D. The query fails because the subquery returns more than one row.

E. The query fails because the outer query and the inner query are using different tables.


参考答案:D

第7题:

Examine the structure of the EMPLOYEES, DEPARTMENTS, and LOCATIONS tables.Which two SQL statements produce the name, department name, and the city of all the employees who earn more then 10000?()

A.

B.

C.

D.


参考答案:B, D

第8题:

View the Exhibit to examine the Automatic SQL Tuning result details.Which action would you suggest for the selected SQL statement in the Exhibit?()

A. Accept the recommended SQL profile.

B.Collect statistics for the related objects.

C. Run the Access Advisor for the SQL statement.

D. Run the Segment Advisor for recommendations.


参考答案:C

第9题:

Examine the structure of the EMPLOYEES and DEPARTMENTS tables:Evaluate this SQL statement:Which SQL statement is equivalent to the above SQL statement?()

A.

B.

C.

D.


参考答案:C

第10题:

Examine the contents of SQL loader control file:Which three statements are true regarding the SQL* Loader operation performed using the control file?()

A. An EMP table is created if a table does not exist. Otherwise, if the EMP table is appended with the loaded data.

B. The SQL* Loader data file myfile1.dat has the column names for the EMP table.

C. The SQL* Loader operation fails because no record terminators are specified.

D. Field names should be the first line in the both the SQL* Loader data files.

E. The SQL* Loader operation assumes that the file must be a stream record format file with the normal carriage return string as the record terminator.


参考答案:A, B, E

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