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Oracle database 10g:Administration I Sample Questions:

1. As a result of performance analysis, you created an index on the prod_name column of the prod_det table, which contains about ten thousand rows. Later, you updated a product name in the table. How does this change affect the index?

A) A leaf will be marked as invalid.
B) A leaf row in the index will be deleted and inserted.
C) The index becomes invalid when you make any updates.
D) The index will be updated automatically at commit.
E) An update in a leaf row takes place.

2. You want to refer the employee personal information stored in operating system(OS) files in EMPLOYEE table. You plan to add a new column to EMPLOYEE table to achieve this. Which data type would you use for the new column?

A) LONG RAW
B) BFILE
C) CLOB
D) BLOB

3. View this parameter setting in your database:
DB_CREATE_FILE_DEST='D:\oracle\product\10.2.0\oradata\oracle'
You created a tablespace by using this command:
CREATE TABLESPACE USERS;
Which two statements are true about the USERS tablespace? (Choose two.)

A) Data files belonging to the USERS tablespace cannot be renamed.
B) Data files are created with names generated by the instance.
C) The tablespace can be extended without specifying the data file.
D) An error is reported and tablespace creation fails.
E) The tablespace has two data files.

4. You work in a data warehouse environment that involves the execution of complex queries. The current content of the SQL cache holds the ideal workload for analysis. You want to analyze only few most resource-intensive statements. What would be your suggestion to receive recommendations on the efficient use of indexes and materialized views to improve query performance?

A) Run the SQL Access Advisor.
B) Run the SQL Tuning Advisor (STA).
C) Run the Automatic Database Diagnostic Monitor (ADDM).
D) Run the Automatic Workload Repository (AWR) report.

5. 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 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.
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 command fails with integrity violation error.

Solutions: