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Oracle database 10g:Administration I Sample Questions:

1. View the Exhibit and analyze the CREATE TABLE statements used to create the ITEMS and ORDERS tables.
The ITEMS table has 50 rows and ORDERS table has 500 rows. Because you decide to not deal with the item code 188 in future, you execute the following command to remove the item:
SQL> DELETE FROM items WHERE item_code=188;
What is the effect of this command?

A) The command fails with integrity violation error.
B) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are populated with
NULL values in their ITEM_CODE columns.
C) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the foreign key constraint is disabled in the ORDERS table.
D) The row containing the value 188 corresponding to the ITEM_CODE column is deleted from the ITEMS table, and the dependent rows in the ORDERS table are also deleted automatically.

2. View the Exhibit.
Your Oracle 10g database has 6 tablespaces in which:
-TEMP is the default temporary tablespace
-UNDOTBS1 is the default undo tablespace
-USERS is the default permanent tablespace
In this database, which three tablespaces can be made offline? (Choose three.)

A) UNDOTBS1
B) SYSTEM
C) TEMP
D) PROD
E) SYSAUX
F) USERS

3. The ST_INFO master table has millions of rows that are updated very rarely. It has a STATE_CODE column that contains the value for 25 states. The table is frequently queried on the STATE_CODE column. Which type of index would you suggest to improve the query performance?

A) reverse key
B) function based
C) B-tree
D) bitmap

4. View the Exhibit to see the structure of the EMPLOYEES and DEPARTMENTS tables.
Your organization plans to dissolve the department with department ID 30. You execute the following command to delete rows from the DEPARTMENTS table: SQL>delete from DEPARTMENTS
where DEPT_ID = 30; The command fails and displays the following error: ERROR at line 1:
ORA-02292: integrity constraint (HR.SYS_C005374) violated - child record found Which two actions would you take to overcome this error? (Choose two.)

A) first, drop the DEPARTMENTS table and then delete the rows from the EMPLOYEES table
B) alter the foreign key constraint to include the on delete cascade option
C) first, delete all of the rows from EMPLOYEES table and then delete the rows from the DEPARTMENTS table for department id 30
D) alter the foreign key constraint to include the cascade option
E) first, delete rows from the EMPLOYEES table for department id 30 and then delete the rows from the DEPARTMENTS table for department id 30
F) first, drop the EMPLOYEES table and then delete the rows from the DEPARTMENTS table

5. Which two statements regarding the LOGGING clause of the CREATE TABLESPACE... statement are correct? (Choose two.)

A) The tablespace will be in the NOLOGGING mode by default, if not specified while creating a tablespace.
B) If the tablespace is in the NOLOGGING mode, no operation on the tablespace will generate redo.
C) This clause is not valid for a temporary or undo tablespace.
D) The tablespace-level logging attribute can be overridden by logging specifications at the table, index, materialized view, materialized view log, and partition levels.

Solutions: