[Dec-2021] 1z0-071 Exam Questions and Valid 1z0-071 Dumps PDF
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How to Prepare for Oracle 1Z0-071: Oracle Database SQL Exam
Preparation Guide for Oracle 1Z0-071: Oracle Database SQL Exam
Introduction
Oracle is an American international information technology corporation located in California. Oracle is a multinational organisation that designs enterprise software systems. Oracle offers a range of cloud-based software and systems, as well as hardware and resources that support companies expand their operations. The emphasis of Oracle apps is on data analytics, market research, IT processes management, business resource planning, security and new technology. Oracle is well regarded for its hardware and software databases. The Oracle Database is one of the most common corporate database goods, a relational database management system (DBMS).
Oracle also designs and creates software and technology for middle-level database management systems, human capital management systems (HCMs), client relationship management systems (CRMs), company resource planning systems (ERPs) and supply chain management systems (SCM). Oracle Database, also referred to as Oracle DBMS, is a multi-model database management framework. It is an extensively used database to conduct database analysis and data retrieval functions. Different providers make Oracle Database usable on the server, premises or a hybrid software implementation. This guide gives the complete understanding of 1Z0-071 dumps and 1Z0-071 practice exams.
NEW QUESTION 21
Examine these statements which execute successfully:
Both statements display departments ordered by their average salaries.
Which two are true?
- A. Both statements will execute successfully If you add E.AVG_SAL. to the select list.
- B. Only the second statement will display departments with no employees.
- C. Only the second statement will execute successfully if you add E.AVG_SAL to the select list.
- D. Only the first statement will execute successfully if you add E.AVG_SAL to the select list.
- E. Only the first statement will display departments with no employees.
- F. Both statements will display departments with no employees.
Answer: C,F
NEW QUESTION 22
Examine the command:
SQL> ALTER TABLE books_transactions
ADD CONSTRAINT fk_book_id FOREIGN KEY (book_id)
REFERENCES books (book_id) ON DELETE CASCADE;
What does ON DELETE CASCADE imply?
- A. When a value in the BOOKS.BOOK_IDcolumn is deleted, the corresponding value is updated in the BOOKS_TRANSACTIONS.BOOK_IDcolumn.
- B. When a row in the BOOKStable is deleted, the rows in the BOOK_TRANSACTIONStable whose BOOK_IDmatches that of the deleted row in the BOOKStable are also deleted.
- C. When the BOOKStable is dropped, all the rows in the BOOK_TRANSACTIONStable are deleted but the table structure is retained.
- D. When the BOOKStable is dropped, the BOOK_TRANSACTIONStable is dropped.
Answer: B
NEW QUESTION 23
Examine this statement:
SELECT last name
FROM employees
ORDER BY CASE WHEN salary = (SELECT MAX(salary) FROM employees)
THEN 'A'
ELSE last_ name
END ,last_name DESC;
Which two statements are true?
- A. The names of employees earning the maximum salary will appear first in an unspecified order.
- B. The names of employees earning the maximum salary will appear first In ascending order.
- C. All remaining employee names will appear in ascending order.
- D. All remaining employee names will appear in descending order.
- E. All remaining employee names will appear in an unspecified order.
- F. The names of employees earning the maximum salary will appear first in descending order.
Answer: A,D
NEW QUESTION 24
Examine the description of the ENPLOYES table:
Which query requires explicit data type conversion?
- A. SELECT join _ date FROM employees WHERE join date > *10-02-2018';
- B. SELECT SUBSTR(join date, 1, 2) - 10 FROM employees;
- C. SELECT join_ date + '20' EROM employees;
- D. SELECT salary + '120.50' FROM employees;
- E. SELECT join_ date||''|| salary FROM employees;
Answer: A
NEW QUESTION 25
The CUSTOMERS table has a CUST_LAST_NAME column of data type VARCHAR2.
The table has two rows whose COST_LAST_MANE values are Anderson and Ausson.
Which query produces output for CUST_LAST_SAME containing Oder for the first row and Aus for the second?
- A. SELECT REPLACE (REPLACE(cust_last_name,'son',''),'An','O') FROM customers;
- B. SELECT INITCAP (REPLACE(TRIM('son' FROM cust_last_name),'An','O')) FROM customers;
- C. SELECT REPLACE (TRIM(TRALING'son' FROM cust_last_name),'An','O') FROM customers;
- D. SELECT REPLACE (SUBSTR(cust_last_name,-3),'An','O') FROM customers;
Answer: A
NEW QUESTION 26
Examine the structure of the INVOICEtable.
Which two SQL statements would execute successfully?
- A. SELECT inv_no, NVL2(inv_amt, inv_amt*.25, 'Not Available')
FROM invoice; - B. SELECT inv_no, NVL2(inv_date, 'Pending', 'Incomplete')
FROM invoice; - C. SELECT inv_no, NVL2(inv_amt, inv_date, 'Not Available')
FROM invoice; - D. SELECT inv_no, NVL2(inv_date, sysdate-inv_date, sysdate)
FROM invoice;
Answer: B,D
NEW QUESTION 27
Examine the structure of the ORDERS table: (Choose the best answer.)
You want to find the total value of all the orders for each year and issue this command:
SQL> SELECT TO_CHAR(order_date,'rr'), SUM(order_total) FROM orders
GROUP BY TO_CHAR(order_date, 'yyyy');
Which statement is true regarding the result?
- A. It executes successfully but gives the correct output.
- B. It return an error because the datatype conversion in the SELECT list does not match the data type conversion in the GROUP BY clause.
- C. It returns an error because the TO_CHAR function is not valid.
- D. It executes successfully but does not give the correct output.
Answer: B
NEW QUESTION 28
Examine the structure of the EMPLOYEES table:
There is a parent/child relationship between EMPLOYEE_ID and MANAGER_ID.
You want to display the name, joining date, and manager for all employees. Newly hired employees are yet to be assigned a department or a manager. For them, 'No Manager' should be displayed in the MANAGER column.
Which SQL query gets the required output?
- A. SELECT e.last_name, e.hire_date, NVL(m.last_name, 'No Manager') Manager FROM employees e NATURAL JOIN employees mON (e.manager_id = m.employee_id).
- B. SELECT e.last_name, e.hire_date, NVL(m.last_name, 'No Manager') Manager FROM employees e RIGHT OUTER JOIN employees mON (e.manager_id = m.employee_id);
- C. SELECT e.last_name, e.hire_date, NVL(m.last_name, 'No Manager') Manager FROM employees e LEFT OUTER JOIN employees mON (e.manager_id = m.employee_id);
- D. SELECT e.last_name, e.hire_date, NVL(m.last_name, 'No Manager') Manager FROM employees e JOIN employees mON (e.manager_id = m.employee_id);
Answer: C
NEW QUESTION 29
See the Exhibit and examine the structure of the PROMOTIONS table:
Using the PROMOTIONS table,
you need to find out the average cost for all promos in the range $0-2000 and $2000-5000 in category A.
You issue the following SQL statements:
What would be the outcome?
- A. It executes successfully and gives the required result.
- B. It generates an error because multiple conditions cannot be specified for the WHEN clause.
- C. It generates an error because CASE cannot be used with group functions.
- D. It generates an error because NULL cannot be specified as a return value.
Answer: A
Explanation:
CASE Expression
Facilitates conditional inquiries by doing the work of an IF-THEN-ELSE statement:
CASE expr WHEN comparison_expr1 THEN return_expr1
[WHEN comparison_expr2 THEN return_expr2
WHEN comparison_exprn THEN return_exprn
ELSE else_expr]
END
NEW QUESTION 30
Examine the structure of the PROMOTIONS table: (Choose the best answer.)
Management requires a report of unique promotion costs in each promotion category.
Which query would satisfy this requirement?
- A. SELECT DISTINCT promo_cost, DISTINCT promo_category FROM promotions;
- B. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1
- C. SELECT promo_category, DISTINCT promo_cost FROM promotions
- D. SELECT DISTINCT promo_cost, promo_category FROM promotions
Answer: B
NEW QUESTION 31
You execute the SQL statement:
What is the outcome?
- A. It fails because the condition for the CNAMES constraint is not valid.
- B. It succeeds and CITY can contain only 'SEATTLE' or null for all rows.
- C. It succeeds and an index is created for CITIZEN_ID.
- D. It fails because the NOT NULL and DEFAULT options cannot be combined for the same column.
Answer: D
NEW QUESTION 32
Which three are true about the CREATE TABLE command?
- A. It can include the CREATE...INDEX statement for creating an index to enforce the primary key constraint.
- B. A user must have the CREATE ANY TABLE privilege to create tables.
- C. The owner of the table should have space quota available on the tablespace where the table is defined.
- D. It implicitly executes a commit.
- E. It implicitly rolls back any pending transactions.
- F. The owner of the table must have the UNLIMITED TABLESPACE system privilege.
Answer: A,C,D
NEW QUESTION 33
Which two statements are true regarding constraints? (Choose two.)
- A. Both primary key and foreign key constraints can be defined at both column and table levels.
- B. A table can have only one primary key but multiple foreign keys.
- C. Only the primary key can be defined at the column and table levels.
- D. A table can have only one primary key and one foreign key.
- E. The foreign key and parent table primary key must have the same name.
Answer: A,B
NEW QUESTION 34
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEES_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:
UPDATE employees
SET (job_id, salary) =
(SELECT job_id, salary
FROM employees
WHERE employee_id = 200)
WHERE employee id=100;
Which two statements are true?
- A. Employees 100 and 200 will have the same JOB ID as before the update command.
- B. Employee 100 will have SALARY set to the same value as the SALARY of employee 200.
- C. Employee 200 will have SALARY set to the same value as the SALARY of employee 100.
- D. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
- E. Employees 100 and 200 will have the same SALARY as before the update command.
- F. Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200.
Answer: B,F
NEW QUESTION 35
Which statement is true regarding external tables?
- A. ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.
- B. The default REJECT LIMIT for external tables is UNLIMITED.
- C. The data and metadata for an external table are stored outside the database.
- D. The CREATE TABLE AS SELECT statement can be used to unload data into regular table in the database from an external table.
Answer: D
NEW QUESTION 36
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 add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.
- D. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values which are not referenced in the defining query of the view.
- E. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains aggregating functions.
- F. 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.
Answer: D,E,F
NEW QUESTION 37
View the Exhibit and examine the structure of CUSTOMERS table.
Using the CUSTOMERS table, you need to generate a report that shows an increase in the credit limit by 15% for all customers. Customers whose credit limit has not been entered should have the message "Not Available" displayed.
Which SQL statement would produce the required result?
- A. SELECT NVL(cust_credit_limit), 'Not Available') "NEW CREDIT"FROM customers;
- B. SELECT NVL(cust_credit_limit * .15), 'Not Available') "NEW CREDIT"FROM customers;
- C. SELECT NVL (TO CHAR(cust_credit_limit * .15), 'Not Available') "NEW CREDIT"FROM customers;
- D. SELECT TO_CHAR (NVL(cust_credit_limit * .15), 'Not Available') "NEW CREDIT"FROM customers;
Answer: C
NEW QUESTION 38
Examine this data in the EMPLOYEES table:
Which statement will execute successfully?
SELECT dept_id, INSTR(last_name, 'A'), SUM(salary) FROM employees GROUP BY
- A. SELECT dept_id, LENGTH(last_name), SUM(salary) FROM employees GROUP BY
- B. dept_id;
- C. dept_id;
SELECT dept_id, MAX(last_name), SUM(salary) FROM employees GROUP BY dept_id; - D. dept_id;
SELECT dept_id, STDDEV(last_name), SUM(salary) FROM employees GROUP BY
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION 39
Which two are true about queries using set operators (UNION, UNION ALL, INTERSECT and MINUS)?
- A. Each SELECT statement in the query can have an ORDER BY clause.
- B. None of the set operators can be used when selecting CLOB columns.
- C. The name of each column in the first SELECT list must match the name of the corresponding column in each subsequent SELECT list.
- D. The FOR UPDATE clause cannot be specified.
- E. There must be an equal number of columns in each SELECT list.
Answer: D,E
NEW QUESTION 40
Which statement is true about SQL query processing in an Oracle database instance? (Choose the best answer.)
- A. During row source generation, rows that satisfy the query are retrieved from the database and stored in memory.
- B. During optimization, execution plans are formulated based on the statistics gathered by the database instance, and the lowest cost plan is selected for execution.
- C. During executing, the oracle server may read data from storage if the required data is not already in memory.
- D. During parsing, a SQL statement containing literals in the WHERE clause that has been executed by any session and which is cached in memory, is always reused for the current execution.
Answer: C
NEW QUESTION 41
Evaluate the following query
What is the correct output of the above query?
- A. +25-00, +54-02, +00 11:12:10.123457
- B. +00-300, +54-02, +00 11:12:10.123457
- C. +25-00, +00-650, +00 11:12:10.123457
- D. +00-300, +00-650, +00 11:12:10.123457
Answer: A
NEW QUESTION 42
Which three statements about roles are true? (Choose three.)
- A. Roles are assigned to roles using the ALTER ROLEstatement.
- B. A role is named group of related privileges that can only be assigned to a user.
- C. A single role can be assigned to multiple users.
- D. Roles are assigned to users using the ALTER USERstatement.
- E. Privileges are assigned to a role using the ALTER ROLEstatement.
- F. A single user can be assigned multiple roles.
- G. Privileges are assigned to a role using the GRANTstatement.
Answer: C,F,G
Explanation:
Use the GRANT statement to assign access privileges and roles.
Reference:
http://archive.dnnsoftware.com/docs/85/administrators/security/roles/assign-multiple-users-to-role.html
https://www.dnnsoftware.com/docs/administrators/user-accounts/assign-user-to-multiple-roles.html
https://www.ibm.com/support/knowledgecenter/en/SSGU8G_11.70.0/com.ibm.sqls.doc/ids_sqs_0828.htm
NEW QUESTION 43
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