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Test: Section 9 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

1. You try to create a function named MYFUNC. The function does not compile correctly because there are errors in your code. Which Dictionary view can you query to see the errors? Mark for Review (1) Points

USER_SOURCE

USER_COMPILES

USER_ERRORS (*)

USER_DEPENDENCIES

USER_OBJECTS

Correct

Correct

2. You have created a function named NEWFUNC. You now change some of the function code, and try to recreate the function by executing: CREATE OR REPLACE FUNCTION newfunc .... ; What happens?

Mark for Review (1) Points

A second function named NEWFUNC_2 is created.

The command fails because the function already exists.

The function is dropped but not recreated.

The function is automatically dropped and then recreated. (*)

The command fails because you should execute: CREATE AND REPLACE ....;

Correct

Correct

3.

To create a function successfully, the following steps should be performed.

A Re-execute the code until it compiles correctly B Write the code containing the CREATE or REPLACE FUNCTION followed by the function code C Test the function from a SQL statement or an anonymous block D If the function fails to compile, correct the errors E Load the code into Application Express F Execute the code in Application Express

What is the correct order to perform these steps?

Mark for Review (1) Points

A,B,E,F,D,C

B,C,E,F,D,A

D,B,E,F,A,C

B,E,F,D,A,C (*)

Correct

Correct

4. Which of the following is a legal location for a function call in a SQL statement? (Choose 3) Mark for Review (1) Points

(Choose all correct answers)

VALUES clause of an INSERT statement (*)

CREATE TABLE statement

WHERE clause in a DELETE statement (*)

The ORDER BY and GROUP BY clauses of a query (*)

Correct

Correct

5. You want to create a function which can be used in a SQL statement. Which one of the following can be coded within your function? Mark for Review (1) Points

COMMIT;

An OUT parameter

RETURN BOOLEAN

One or more IN parameters (*)

Correct

Correct

Page 1 of 3

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Test: Section 9 Quiz

Summary

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

6.

Why will the following statement fail?

SELECT employee_id, tax(p_value => salary) FROM employees;

Mark for Review (1) Points

The data type for the tax variable does not match the data type for salary.

Name notation is not allowed. (*)

The statement will execute and not fail.

User-defined functions are not allowed in the SELECT clause.

Incorrect

Incorrect. Refer to Section 9 Lesson 2.

Rights"?

7. How do you specify that you want a procedure MYPROCA to use "Definer's Mark for Review

(1) Points

CREATE OR REPLACE PROCEDURE myproca AUTHID OWNER IS...

Definer's Rights are the default, therefore no extra code or commands are needed. (*)

ALTER PROCEDURE myproca TO DEFINER;

GRANT DEFINER TO myprocA;

CREATE OR REPLACE PROCEDURE myproca AUTHID CURRENT_USER IS...

Correct

Correct

8.

What will happen when the following procedure is executed?

PROCEDURE log_usage (p_card_id NUMBER, p_loc NUMBER) IS PRAGMA AUTONOMOUS_TRANSACTION BEGIN INSERT INTO log_table (card_id, location, tran_date) VALUES (p_card_id, p_loc, SYSDATE); COMMIT; END log_usage; Mark for Review (1) Points

The subprogram will fail because it is missing AUTHID CURRENT_USER before IS.

The compilation will fail because a semicolon after AUTONOMOUS_TRANSACTION is required. (*)

The subprogram will fail because the PRAGMA statement must be before IS.

The program will compile successfully.

Correct

Correct

9.

What is one of the main purposes of the Data Dictionary?

Mark for

Review (1) Points

To provide a structured list of all objects in the database (*)

To provide a list of all objects in your schema, but not in other users' schemas

To ensure correct spelling of the values in VARCHAR2 table columns

To translate data from one language to another

To prevent users from accidentally dropping tables

Incorrect

true?

Incorrect. Refer to Section 9 Lesson 3.

10. Which of the following statements about the "super-view" DICTIONARY is Mark for Review

(1) Points

It can be thought of as a "catalog of the master catalog".

None of these.

It lists all the dictionary views.

All of these. (*)

We can use it like a Web search engine to remind ourselves of the names of dictionary views.

Incorrect

Previous

Incorrect. Refer to Section 9 Lesson 3.

Page 2 of 3

Test: Section 9 Quiz

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Summary

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

11. Mark for Review

Which of the following will tell you how many functions you own?

(1) Points

SELECT FUNCTIONS FROM USER_OBJECTS;

SELECT COUNT(*) FROM USER_OBJECTS;

SELECT COUNT(*) FROM USER_PROCEDURES;

SELECT COUNT(*) FROM USER_FUNCTIONS;

SELECT COUNT(*) FROM USER_OBJECTS WHERE OBJECT_TYPE='FUNCTION'; (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 3.

12. When a database object is first created, only its owner (creator) and the Database Administrator are privileged to use it. True or False? Mark for Review (1) Points

True (*)

False

Correct

Correct

13. JOE's schema contains a COUNTRIES table. The following commands are executed by JOE and TOM: (JOE): GRANT SELECT ON countries TO tom WITH GRANT OPTION; (TOM): GRANT SELECT on joe.countries TO dick WITH GRANT OPTION; Now, JOE executes: REVOKE SELECT ON countries FROM tom; What happens to the grant to DICK?

Mark for Review (1) Points

DICK also loses his SELECT privilege. (*)

The REVOKE statement fails because only the Database Administrator (not JOE) can revoke privileges.

Nothing. DICK's privilege is preserved even though TOM lost his privilege.

The REVOKE statement fails because JOE must remove the SELECT privilege from both users at the same time.

Incorrect

Incorrect. Refer to Section 9 Lesson 5.

14. Mark for Review

Which view would you query to see the detailed code of a procedure?

(1) Points

user_dependencies

user_procedures

user_errors

user_objects

user_source (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 4.

15. Procedure ins_emp accepts an employee_id as an IN parameter and attempts to insert a row with that employee_id into the EMPLOYEES table. Ins_emp does not contain an exception section. A second procedure is created as follows: CREATE OR REPLACE PROCEDURE call_ins_emp IS BEGIN ins_emp(99); -- this employee does not exist ins_emp(100); -- this employee already exists ins_emp(999); -- this employee does not exist EXCEPTION WHEN OTHERS THEN DBMS_OUTPUT.PUT_LINE('An exception occurred'); END;

When call_ins_emp is executed, (assuming Auto Commit is turned on), which rows will be inserted into the EMPLOYEES table?

Mark for Review (1) Points

999 only

99 and 999

99 only (*)

All three rows will be inserted

No rows will be inserted

Incorrect

Previous

Incorrect. Refer to Section 9 Lesson 4.

Page 3 of 3

Summary

Test: Section 9 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

1. User DIANE owns a DEPARTMENTS table. User JOEL needs to update the location_id column of Diane's table, but no other columns. Which SQL statement should Diane execute to allow this? Mark for Review (1) Points

GRANT UPDATE ON departments TO joel;

GRANT UPDATE(location_id) ON departments TO joel; (*)

GRANT UPDATE ON location_id OF departments TO joel;

GRANT UPDATE ON departments(location_id) TO joel;

GRANT UPDATE ON departments.location_id TO joel;

Incorrect

Incorrect. Refer to Section 9 Lesson 5.

2. You granted user JOE the privilege to query the EMPLOYEES table in your schema. Now, you want to remove this privilege from JOE. Which command would you use? Mark for Review (1) Points

UNGRANT SELECT ON employees TO joe;

GRANT UNSELECT ON employees TO joe;

DENY SELECT ON employees TO joe;

REVOKE SELECT ON employees FROM joe; (*)

ROLLBACK;

Incorrect

Incorrect. Refer to Section 9 Lesson 5.

3. Function GET_JOB accepts an employee id as input and returns that employee's job id. Which of the following calls to the function will NOT work? Mark for Review (1) Points

DBMS_OUTPUT.PUT_LINE(get_job(100));

IF get_job(100) = 'IT_PROG' THEN ...

v_job_id := get_job(100);

get_job(100,v_job_id); (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 1.

4. anonymous block.

To create a function successfully,the first step is to test the code in an Mark for Review

(1) Points

True

False (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 1.

5.

Based on the following function definition:

Create function annual_comp (sal employees.salary%type, comm_pct IN employees.commission%type) ...

Which one of the following is an incorrect call for annual_comp?

Mark for Review (1) Points

Execute dbms_output.put_line(annual_comp (1000,.2));

Select employee_id, annual_comp(salary) from employees; (*)

Declare Ann_comp number (6,2); Begin ... Ann_comp := annual_comp(1000,.2); ... End;

Select employee_id, annual_comp(salary, commission_pct) from employees;

Incorrect

Page 1 of 3

Incorrect. Refer to Section 9 Lesson 1.

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Summary

Test: Section 9 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

6. Invoker's Rights?

Which of the following is the correct syntax to create a procedure using Mark for Review

(1) Points

CREATE PROCEDURE myproc AUTHID CURRENT_USER IS BEGIN ... (*)

CREATE PROCEDURE myproc IS BEGIN AUTHID CURRENT_USER ...

CREATE PROCEDURE myproc IS AUTHID CURRENT_USER BEGIN ...

CREATE PROCEDURE AUTHID CURRENT_USER myproc IS BEGIN ...

Correct

Correct

7. Procedure GET_EMPS includes a SELECT…FROM EMPLOYEES. The procedure was created using Invoker's Rights. Which of the following statements are true? (Choose three.) Mark for Review (1) Points

(Choose all correct answers)

The user who executes the procedure needs EXECUTE privilege on the procedure. (*)

The creator of the procedure needs SELECT privilege on EMPLOYEES. (*)

The user who executes the procedure does not need any privileges.

The user who executes the procedure needs SELECT privilege on EMPLOYEES. (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 6.

8.

User MARY executes this SQL statement:

SELECT COUNT(*) FROM USER_VIEWS;

A value of 15 is returned. Which of the following statements is true?

Mark for Review (1) Points

Mary has created views on 15 of her tables.

Other users have granted Mary SELECT privilege on 15 of their views.

There are 15 views in the database.

There are 15 views in Mary's schema. (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 3.

9.

A user executes the following statement:

CREATE INDEX fn_index ON employees(first_name);

What output will the following statement now display:

SELECT index_name FROM user_indexes WHERE index_name LIKE 'fn%'; Mark for Review (1) Points

No output will be displayed (*)

fn_index FN_INDEX

FN_INDEX

fn_index

Correct

Correct

10. User JOHN wants to see the names of all the tables in his schema. He does NOT want to see the names of any tables in other users' schemas. Which Dictionary view should he query? Mark for Review

(1) Points

DICTIONARY

ALL_TABLES

DBA_TABLES

JOHN_TABLES

USER_TABLES (*)

Incorrect

Previous

Incorrect. Refer to Section 9 Lesson 3.

Page 2 of 3

Test: Section 9 Quiz

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Summary

Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

11.

You want to remove the procedure NO_NEED from your schema. You

execute: DROP PROCEDURE no_need; Which Data Dictionary views are updated automatically?

Mark for Review (1) Points

None of these

USER_SOURCE

USER_OBJECTS

All of the above (*)

USER_PROCEDURES

Incorrect

Incorrect. Refer to Section 9 Lesson 4.

12. Procedure ins_emp accepts an employee_id as an IN parameter and attempts to insert a row with that employee_id into the EMPLOYEES table. Ins_emp does not contain an exception section. A second procedure is created as follows: CREATE OR REPLACE PROCEDURE call_ins_emp IS BEGIN ins_emp(99); -- this employee does not exist ins_emp(100); -- this employee already exists ins_emp(999); -- this employee does not exist EXCEPTION WHEN OTHERS THEN DBMS_OUTPUT.PUT_LINE('An exception occurred'); END;

When call_ins_emp is executed, (assuming Auto Commit is turned on), which rows will be inserted into the EMPLOYEES table?

Mark for Review (1) Points

99 only (*)

All three rows will be inserted

No rows will be inserted

99 and 999

999 only

Incorrect

Incorrect. Refer to Section 9 Lesson 4.

13. Which of the following is a legal location for a function call in a SQL statement? (Choose 3) Mark for Review (1) Points

(Choose all correct answers)

CREATE TABLE statement

WHERE clause in a DELETE statement (*)

VALUES clause of an INSERT statement (*)

The ORDER BY and GROUP BY clauses of a query (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 2.

14. Function DOUBLE_SAL has been created as follows: CREATE OR REPLACE FUNCTION double_sal (p_salary IN employees.salary%TYPE) RETURN NUMBER IS BEGIN RETURN(p_salary * 2); END; Which of the following calls to DOUBLE_SAL will NOT work? Mark for Review

(1) Points

None, they will all work (*)

SELECT last_name, double_sal(salary) FROM employees;

SELECT * FROM employees ORDER BY double_sal(salary) DESC;

SELECT * FROM employees WHERE double_sal(salary) > 20000;

UPDATE employees SET salary = double_sal(salary);

Correct

Correct

15. Mark for Review

Which of the following is a benefit of user-defined functions? (Choose 3)

(1) Points

(Choose all correct answers)

They can do the same job as built-in system functions such as UPPER and ROUND.

They can often be used inside SQL statements. (*)

They can add business rules to the database and can be reused many times. (*)

They can be used in a WHERE clause to filter data and thereby increase efficiency. (*)

Incorrect

Previous

Incorrect. Refer to Section 9 Lesson 2.

Page 3 of 3

Summary

Test: Section 9 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

1. You have forgotten the name of the Dictionary view USER_TABLES. Which of the following statements is the best and quickest way to remind yourself? Mark for Review (1) Points

SELECT * FROM dictionary WHERE table_name = 'USER%';

Read the online Oracle documentation at http://technet.oracle.com.

Phone the database administrator.

SELECT * FROM dict WHERE table_name LIKE 'USER%TAB%'; (*)

SELECT * FROM dictionary WHERE table_name = 'USER_TABLES';

Incorrect

Incorrect. Refer to Section 9 Lesson 3.

2.

Which of the following is NOT a benefit of the Data Dictionary? Mark for

Review (1) Points

It allows the PL/SQL compiler to check for object existence; for example, when creating a procedure which references a table, the PL/SQL compiler can check that the table exists.

It allows us to remind ourselves of the names of our tables, in case we have fogotten them.

It allows us to check which system privileges have been granted to us.

It will speed up the execution of SELECT statements in which the WHERE clause column is not indexed. (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 3.

3. You want to display the names of all tables in your schema, but you have forgotten which Dictionary view to query. Which of the following will remind you of the name of the correct Dictionary view? Mark for Review (1) Points

SELECT * FROM USER_OBJECTS WHERE table_name LIKE '%TABLE%';

HELP DICTIONARY

SELECT * FROM DICTIONARY WHERE table_name LIKE 'USER%TAB%'; (*)

SELECT * FROM DICTIONARY WHERE table_name LIKE 'user%table%';

SELECT * FROM DICTIONARY WHERE table_name LIKE 'DBA%TABLE%';

Incorrect

Incorrect. Refer to Section 9 Lesson 3.

4. Procedure ins_emp accepts an employee_id as an IN parameter and attempts to insert a row with that employee_id into the EMPLOYEES table. Ins_emp does not contain an exception section. A second procedure is created as follows: CREATE OR REPLACE PROCEDURE call_ins_emp IS BEGIN ins_emp(99); -- this employee does not exist ins_emp(100); -- this employee already exists ins_emp(999); -- this employee does not exist EXCEPTION WHEN OTHERS THEN DBMS_OUTPUT.PUT_LINE('An exception occurred');

END;

When call_ins_emp is executed, (assuming Auto Commit is turned on), which rows will be inserted into the EMPLOYEES table?

Mark for Review (1) Points

99 and 999

99 only (*)

999 only

No rows will be inserted

All three rows will be inserted

Incorrect

Incorrect. Refer to Section 9 Lesson 4.

5.

The following code shows the dependencies between three procedures:

CREATE PROCEDURE parent IS BEGIN child1; child2; END parent; You now try to execute:

DROP PROCEDURE child2; What happens?

Mark for Review (1) Points

CHILD2 is dropped successfully. PARENT and CHILD1 are both marked INVALID.

The database automatically drops PARENT as well.

CHILD2 is dropped successfully. PARENT is marked INVALID, but CHILD1 is still valid. (*)

The database automatically drops CHILD1 as well.

You cannot drop CHILD2 because PARENT is dependent on it.

Incorrect

Page 1 of 3

Incorrect. Refer to Section 9 Lesson 4.

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Summary

Test: Section 9 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

6. User SALLY's schema contains a NEWEMP table. Sally uses Invoker's rights to create procedure GET_NEWEMP which includes the line: SELECT ... FROM NEWEMP ... ;

Sally also grants EXECUTE privilege on the procedure to CURLY, but no other privileges. What will happen when Curly executes the procedure?

Mark for Review (1) Points

The procedure will fail because Curly does not have the EXECUTE ANY PROCEDURE system privilege.

The procedure will execute successfully.

The procedure will fail because Curly does not have SELECT privilege on NEWEMP.

The procedure will fail because there is no NEWEMP table in Curly's schema. (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 6.

7. How do you specify that you want a procedure MYPROCA to use Invoker's Rights? Mark for Review (1) Points

GRANT INVOKER TO myprocA;

Invoker's Rights are the default, therefore no extra code is needed.

CREATE OR REPLACE PROCEDURE myproca AUTHID CURRENT_USER IS... (*)

CREATE OR REPLACE PROCEDURE myproca AUTHID OWNER IS...

ALTER PROCEDURE myproca TO INVOKER;

Incorrect

Incorrect. Refer to Section 9 Lesson 6.

8. Mark for Review

Which of the following is found in a function and not a procedure?

(1) Points

Return statement in the header (*)

IN parameters

Local variables in the IS/AS section

An exception section

Correct

Correct

9. You have created a function named NEWFUNC. You now change some of the function code, and try to recreate the function by executing: CREATE OR REPLACE FUNCTION newfunc .... ; What happens?

Mark for Review (1) Points

The function is automatically dropped and then recreated. (*)

The function is dropped but not recreated.

The command fails because the function already exists.

A second function named NEWFUNC_2 is created.

The command fails because you should execute: CREATE AND REPLACE ....;

Incorrect

one value.

Incorrect. Refer to Section 9 Lesson 1.

10. A function must have at least one IN parameter, and must return exactly Mark for Review

(1) Points

True

False (*)

Incorrect

Previous

Incorrect. Refer to Section 9 Lesson 1.

Page 2 of 3

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Summary

Test: Section 9 Quiz Review your answers, feedback, and question scores below. An asterisk (*) indicates a correct answer.

Section 9 Quiz (Answer all questions in this section)

11. You have created a function called USEFUL. You want every database user to be able to invoke the function. Which command would you use to do this? Mark for Review (1) Points

GRANT EXECUTE ON useful TO *;

GRANT useful TO PUBLIC;

GRANT EXECUTE ON useful TO PUBLIC; (*)

GRANT useful TO WORLD;

GRANT TO PUBLIC EXECUTE ON useful;

Incorrect

Incorrect. Refer to Section 9 Lesson 5.

12. JOE's schema contains a COUNTRIES table. The following commands are executed by JOE and TOM: (JOE): GRANT SELECT ON countries TO tom WITH GRANT OPTION; (TOM): GRANT SELECT on joe.countries TO dick WITH GRANT OPTION; Now, JOE executes: REVOKE SELECT ON countries FROM tom; What happens to the grant to DICK?

Mark for Review (1) Points

DICK also loses his SELECT privilege. (*)

Nothing. DICK's privilege is preserved even though TOM lost his privilege.

The REVOKE statement fails because JOE must remove the SELECT privilege from both users at the same time.

The REVOKE statement fails because only the Database Administrator (not JOE) can revoke privileges.

Correct

Correct

13.

Why will the following statement fail?

SELECT employee_id, tax(p_value => salary) FROM employees;

Mark for Review (1) Points

The data type for the tax variable does not match the data type for salary.

User-defined functions are not allowed in the SELECT clause.

The statement will execute and not fail.

Name notation is not allowed. (*)

Incorrect

Incorrect. Refer to Section 9 Lesson 2.

14. User-defined functions can extend the power of SQL statements where Oracle does not provide ready-made functions such as UPPER and LOWER. True or False? Mark for Review (1) Points

True (*)

False

Correct

Correct

15. You want to create a function which can be used in a SQL statement. Which one of the following can be coded within your function? Mark for Review (1) Points

One or more IN parameters (*)

An OUT parameter

RETURN BOOLEAN

COMMIT;

Incorrect

Previous

Incorrect. Refer to Section 9 Lesson 2.

Page 3 of 3

Summary