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Question 1:

Which three statements are true about views in an Oracle database?

A. A SELECT statement cannot contain a where clause when querying a view containing a WHERE clause in its defining query

B. Rows inserted into a table using a view are retained in the table if the view is dropped

C. Views can join tables only if they belong to the same schema.

D. Views have no segment.

E. Views have no object number.

F. A view can be created that refers to a non-existent table in its defining query.

Correct Answer: BDF

Question 2:

Examine the description of the EMPLOYEES table:

Which statement will execute successfully, returning distinct employees with non-null first names?

A. SELECT DISTINCT * FROM employees WHERE first_ name IS NOT NULL;

B. SELECT first_ name, DISTINCT last_ name FROM employees WHERE first_ name IS NOT NULL;

C. SELECT Distinct * FROM employees WHERE first_ name < > NULL;

D. SELECT first_ name, DISTINCT last_ name FROM employees WHERE first_ name < > NULL;

Correct Answer: A

Question 3:

Examine the description of the transactions table:

Which two SQL statements execute successfully?

A. SELECT customer_id AS “CUSTOMER-ID”, transaction_date AS DATE, amount+100 “DUES” from transactions;

B. SELECT customer_id AS \’CUSTOMER-ID\’,transaction_date AS DATE, amount+100 \’DUES\’ from transactions;

C. SELECT customer_id CUSTID, transaction_date TRANS_DATEamount+100 DUES FROM transactions;

D. SELECT customer_id AS “CUSTOMER-ID”, transaction_date AS “DATE”, amount+100 DUES FROM transactions;

E. SELECT customer id AS CUSTOMER-ID, transaction_date AS TRANS_DATE, amount+100 “DUES AMOUNT” FROM transactions;

Correct Answer: CD

Question 4:

Examine the data in the NEW_EMPLOYEES table:

Examine the data in the EMPLOYEES table: You want to:

1.

Update existing employee details in the EMPLOYEES table with data from the NEW EMPLOYEES table.

2.

Add new employee detail from the NEW_ EMPLOYEES able to the EMPLOYEES table.

Which statement will do this:

A. MERGE INTO employees e USING new employees ne WHERE e.employee_id = ne. employee_ id WHEN MATCHED THEN UPDATE SET e.name = ne. name, e.job_id = ne.job_id,e.salary =ne. salary WHEN NOT MATCHED THEN INSERT VALUES (ne. employee_id,ne.name, ne.job_id,ne.salary) ;

B. MERGE INTO employees e USING new_employees n ON (e.employee_id = ne.employee_id) WHEN MATCHED THEN UPDATE SET e.name = ne. name, e.job id = ne.job_id,e.salary =ne. salary WHEN NOT MATCHED THEN INSERT VALUES (ne. employee_id,ne.name,ne.job_id,ne.salary);

C. MERGE INTO employees e USING new employees ne ON (e.employee_id = ne.employee_id) WHEN FOUND THEN UPDATE SET e.name =ne. name, e.job_id=ne.job_id, e.salary =ne.salary WHEN NOT FOUND THEN INSERT VALUES (ne.employee_id,ne.name,ne.job_id,ne.salary) ;

D. MERGE INTO employees e USING new_employees n WHERE e.employee_id = ne.employee_id WHEN FOUND THEN UPDATE SET e.name=ne.name,e.job_id =ne.job_id, e.salary=ne.salary WHEN NOT FOUND THEN INSERT VALUES (ne. employee_ id,ne. name,ne. job id,ne. salary) ;

Correct Answer: B

Question 5:

You execute the following commands:

SQL > DEFINE hire date = \’01-APR-2011\’

SQL >SELECT employee_id, first_name, salary

FROM employees

WHERE hire_date > \’andhiredate\’

AND manager_id > andmgr_id;

For Which substitution variables are you prompted for the input?

A. none, because no input is required

B. both the substitution variables \’\’hiredate\’ and \’mgr_id\’.

C. only hiredate\’

D. only \’mgr_id\’

Correct Answer: D

Question 6:

Examine the structure of the EMPLOYEES table.

There is a parent/child relationship between EMPLOYEE_ID and MANAGER_ID.

You want to display the last names and manager IDs of employees who work for the same manager as the employee whose EMPLOYEE_ID is 123.

Which query provides the correct output?

A. SELECT e.last_name, m.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.manager_id = m.employee_id) AND e.employee_id = 123;

B. SELECT e.last_name, m.manager_id FROM employees e LEFT OUTER JOIN employees m on (e.employee_id = m.manager_id) WHERE e.employee_id = 123;

C. SELECT e.last_name, e.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.employee_id = m.employee_id) WHERE e.employee_id = 123;

D. SELECT m.last_name, e.manager_id FROM employees e LEFT OUTER JOIN employees m on (e.manager_id = m.manager_id) WHERE e.employee_id = 123;

Correct Answer: D

Question 7:

Examine the description of the EMPLOYEES table:

Which two queries return rows for employees whose manager works in a different department?

A. SELECT emp. * FROM employees emp WHERE manager_ id NOT IN ( SELECT mgr.employee_ id FROM employees mgr WHERE emp. department_ id < > mgr.department_ id );

B. SELECT emp.* FROM employees emp WHERE NOT EXISTS ( SELECT NULL FROM employees mgr WHERE emp. manager id = mgr. employee_ id AND emp.department_id<>mgr.department_id );

C. SELECT emp.* FROM employees emp LEFT JOIN employees mgr ON emp. manager_ id = mgr. employee_ id AND emp. department id < > mgr. department_ id;

D. SELECT emp. * FROM employees emp RIGHT JOIN employees mgr ON emp. manager_ id = mgr. employee id AND emp. department id <> mgr.department_ id WHERE emp. employee_ id IS NOT NULL;

E. SELECT emp. * FROM employees emp JOIN employees mgr ON emp. manager_ id = mgr. employee_ id AND emp. department_ id<> mgr.department_ id;

Correct Answer: DE

Question 8:

Which three statements are true about Structured Query Language (SQL)?

A. It guarantees atomicity, consistency, isolation, and durability (ACID) features

B. It best supports relational databases

C. It is used to define encapsulation and polymorphism for a relational table

D. It requires that data be contained in hierarchical data storage

E. It is the only language that can be used for both relational and object-oriented databases

F. It provides independence for logical data structures being manipulated from the underlying physical data storage

Correct Answer: ABF

Question 9:

Examine this SQL statement: SELECT cust_id, cus_last_name “Last Name” FROM customers WHERE country_id = 10 UNION SELECT cust_id CUST_NO, cust_last_name FROM customers WHERE country_id = 30 Identify three ORDER BY clauses, any one of Which can complete the query successfully.

A. ORDER BY 2, 1

B. ORDER BY “CUST_NO”

C. ORDER BY 2,cust_id

D. ORDER BY CUST_NO

E. ORDER BY “Last Name”

Correct Answer: ACE

Question 10:

Examine the description of the EMPLOYEES table:

Which query requires explicit data type conversion?

A. SELECT SUBSTR(join date, 1, 2) – 10 FROM employees;

B. SELECT join_ date + \’20\’ EROM employees;

C. SELECT join_ date`\’ salary FROM employees;

D. SELECT join _ date FROM employees WHERE join date > *10-02-2018\’;

E. SELECT salary + \’120.50\’ FROM employees;

Correct Answer: D

Question 11:

Examine the description of the CUSTOMERS table:

Which two SELECT statements will return these results:

CUSTOMER_ NAME

Mandy

Mary

A. SELECT customer_ name FROM customers WHERE customer_ name LIKE \’ % a % \’ ;

B. SELECT customer_ name FROM customers WHERE customer name LIKE \’Ma%\’ ;

C. SELECT customer_ name FROM customers WHERE customer_ name=\’*Ma*\’;

D. SELECT customer_ name FROM customers WHERE UPPER (customer_ name ) LIKE \’MA*. ;

E. SELECT customer_ name FROM customers WHERE customer name LIKE \’Ma*\’;

F. SELECT customer_ name FROM customers WHERE UPPER (customer name) LIKE \’ MAand\’;

G. SELECT customer_ name FROM customers WHERE customer_ name KIKE .*Ma*\’;

Correct Answer: AB

Question 12:

View the exhibit and examine the description of the PRODUCT_INFORMATION table.

Which SQL statement would retrieve from the table the number of products having LIST_PRICE as NULL?

A. SELECT COUNT (DISTINCT list_price) FROM product_information WHERE list_price is NULL

B. SELECT COUNT (NVL(list_price, 0)) FROM product_information WHERE list_price is NULL

C. SELECT COUNT (list_price) FROM product_information WHERE list_price i= NULL

D. SELECT COUNT (list_price) FROM product_information WHERE list_price is NULL

Correct Answer: B

Question 13:

Which two are true about the USING clause when joining tables?

A. All column names in a USING clause must be qualified with a table name or table alias.

B. It can never be used with a natural join.

C. It is used to specify an equijoin of columns that have the same name in both tables.

D. It can never be used with a full outer join.

E. It is used to specify an explicit join condition involving operators.

Correct Answer: BE

Question 14:

Examine This Statement Which returns the name of each employee and their manager,

SELECT e.last name AS emp, m.last_name AS mgr

FROM employees e JOIN managers m

ON e.manager_ id = m. employee_ id ORDER BY emp;

You want to extend the query to include employees with no manager. What must you add before JOIN to do this?

A. CROSS

B. FULL OUTER

C. LEFT OUTER

D. RIGHT OUTER

Correct Answer: C

Question 15:

Examine this command:

TRUNCATE TABLE test;

Table truncated.

Which two are true? (Choose two.)

A. The structure of the TEST table is removed.

B. All the indexes on the TEST table are dropped.

C. All the constraints on the TEST table are dropped.

D. Removed rows can not be recovered using the ROLLBACK command.

E. All the rows in the TEST table are removed.

Correct Answer: AC

…

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Questions and answers from 1Z0-071 free dumps.

Question 1:

Which three statements are true about performing Data Manipulation Language (DML) operations on a view In an Oracle Database?

A. Insert statements can always be done on a table through a view.

B. The WITH CHECK clause has no effect when deleting rows from the underlying table through the view.

C. Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.

D. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.

E. Views cannot be used to add on modify rows in an underlying table if the defining query of the view contains aggregating functions.

F. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values That are not referenced in the defining query of the view.

Correct Answer: DEF

Question 2:

Which four statements are true about constraints on Oracle tables?

A. A Column can have only one CHECK Constraint.

B. A NOT NULL Constraint can be defined at the table level.

C. A UNIQUE constraint permits NULLS.

D. A PRIMARY KEY Constraint can be added after a table has been created and populated.

E. A CHECK Constraint can refer to values in other rows.

F. A UNIQUE Constraint can use a pre-existing index on the constrained column or columns.

G. A FOREIGN KEY Column can contain NULLS.

Correct Answer: CDFG

Question 3:

Which two queries execute successfully?

A. SELECT NULLIF(100, 100) FROM DUAL

B. SELECT COALESCE(100, NULL, 200) FROM DUAL

C. SELECT NULLIF(100, \’A\’) FROM DUAL

D. SELECT NULLIF(NULL, 100) FROM DUAL

E. SELECT COALESCE(100, \’A\’ ) FROM DUAL

Correct Answer: AB

Question 4:

Which three are true about multiple INSERT statements?

A. They can be performed only by using a subquery.

B. They can be performed on relational tables.

C. They can be performed on views.

D. They can be performed on remote tables.

E. They can be performed on external tables using SQL*Loader.

F. They can insert each computed row into more than one table.

Correct Answer: ABF

Question 5:

Which three are true about granting object privileges on tables, views, and sequences?

A. UPDATE can be granted only on tables and views.

B. DELETE can be granted on tables, views, and sequences.

C. REFERENCES can be granted only on tables and views.

D. INSERT can be granted on tables, views, and sequences.

E. SELECT can be granted only on tables and views.

F. ALTER can be granted only on tables and sequences.

Correct Answer: ACF

Question 6:

Examine the description of the PRODUCTS table Which contains data: Which two are true?

A. The PROD ID column can be renamed.

B. The PROD_ ID column data type can be changed to VARCHAR2 (2).

C. The EXPIRY DATE column data type can be changed to TIME STAMP.

D. The EXPIRY DATE column cannot be dropped.

E. The PROD NAME column cannot have a DEFAULT clause added to it.

Correct Answer: AC

Question 7:

Which two are true about the WITH GRANT OPTION clause?

A. The grantee can grant the object privilege to any user in the database, with of without including this option.

B. The grantee must have the GRANT ANY OBJECT PRIVILEGE system privilege to use this option.

C. It can be used when granting privileges to roles.

D. It can be used for system and object privileges.

E. It cannot be used to pass on privileges to PUBLIC by the grantee.

F. It can be used to pass on privileges to other users by the grantee.

Correct Answer: AF

Question 8:

Which two statements are true about INTERVAL data types

A. INTERVAL YEAR TO MONTH columns only support monthly intervals within a range of years.

B. The value in an INTERVAL DAY TO SECOND column can be copied into an INTERVAL YEAR TO MONTH column.

C. INTERVAL YEAR TO MONTH columns only support monthly intervals within a single year.

D. The YEAR field in an INTERVAL YEAR TO MONTH column must be a positive value.

E. INTERVAL DAY TO SECOND columns support fractions of seconds.

F. INTERVAL YEAR TO MONTH columns support yearly intervals.

Correct Answer: EF

Question 9:

Which two statements are true about Oracle synonyms?

A. A synonym can have a synonym.

B. A synonym has an object number.

C. Any user can create a public synonym.

D. All private synonym names must be unique in the database.

E. A synonym can be created on an object in a package.

Correct Answer: AB

Question 10:

Which two queries execute successfully?

A. SELECT INTERVAL \’1\’ DAY – SYSDATE FROM DUAL;

B. SELECT SYSTIMESTAMP + INTERVAL \’1\’ DAY FROM DUAL;

C. SELECT INTERVAL \’1\’ DAY – INTERVAL \’1\’ MINUTE FROM DUAL;

D. select INTERVAL \’1\’ DAY +INTERVAL \’1\’ MONTH FROM DUAL;

E. SELECT SYSDATE “INTERVAL \’1\’ DAY FROM DUAL;

Correct Answer: BC

Question 11:

Which statement is true about aggregate functions?

A. The AVG function implicitly converts NULLS to zero

B. The MAX and MIN functions can be used on columns with character data types

C. Aggregate functions can be used in any clause of a SELECT statement

D. Aggregate functions can be nested into any number of levels

Correct Answer: B

Question 12:

Which two statements are true about the COUNT function?

A. It can only be used for NUMBER data types.

B. COUNT (DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and NULLs in the INV_AMT column

C. COUNT(*) returns the number of rows in a table including duplicate rows and rows containing NULLs in any column.

D. A SELECT statement using the COUNT function with a DISTINCT keyword cannot have a WHERE clause.

E. COUNT(inv_amt) returns the number of rows in a table including rows with NULL in the INV_AMT column.

Correct Answer: BC

Question 13:

Which three statements are true about defining relations between tables in a relational database?

A. Foreign key columns allow null values.

B. Unique key columns allow null values

C. Primary key columns allow null values.

D. Every primary or unique key value must refer to a matching foreign key value.

E. Every foreign key value must refer to a matching primary or unique key value.

Correct Answer: ABE

Question 14:

In Which three situations does a new transaction always start?

A. When issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session

B. When issuing a CREATE INDEX statement after a CREATE TABLE statement completed unsuccessfully in the same session

C. When issuing a TRUNCATE statement after a SELECT statement was issued in the same session

D. When issuing a CREATE TABLE statement after a SELECT statement was issued in the same session

E. When issuing the first Data Manipulation Language (OML) statement after a COMMIT or ROLLBACK statement was issued in the same session

F. When issuing a DML statement after a DML statement is filed in the same session.

Correct Answer: ABE

Question 15:

You execute these commands:

CREATE TABLE customers (customer id INTEGER, customer name VARCHAR2 (20));

INSERT INTO customers VALUES (1`Custmoer1 `);

SAVEPOINT post insert;

INSERT INTO customers VALUES (2, \’Customer2 `);

SELECTCOUNT (*) FROM customers;

Which two, used independently, can replace so the query retums 1?

A. ROLLBACK;

B. COMMIT;

C. ROLIBACK TO SAVEPOINT post_ insert;

D. CONOIT TO SAVEPOINT post_ insert;

E. ROLLEBACK TO post_ insert;

Correct Answer: CE

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