[May 19, 2026] 1z0-071 Exam Dumps 100% Same Q&A In Your Real Exam
1z0-071 Test Engine Dumps Training With 325 Questions
Oracle 1z0-071 certification exam tests the candidate's understanding of SQL language essentials, including data retrieval, data manipulation, and data control. Candidates are expected to have a strong foundation in SQL programming, including knowledge of SQL syntax, data types, and functions. They must also be proficient in creating and managing database objects such as tables, views, indexes, and constraints.
NEW QUESTION # 22
Evaluate the following statement.
Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?
- A. Each row is evaluated by the first WHEN clause and if the condition is true, then the row would be evaluated by the subsequent WHEN clauses.
- B. Each row is evaluated by the first WHEN clause and if the condition is false then the row would be evaluated by the subsequent WHEN clauses.
- C. The INSERT statement will return an error because the ELSE clause is missing.
- D. All rows are evaluated by all the three WHEN clauses.
Answer: D
NEW QUESTION # 23
In the EMPLOYEES table there are 1000 rows and employees are working in the company for more than
10 years.
Evaluate the following SQL statement:
What would be the result?
- A. It gives an error because NVL function cannot be used with UPDATE.
- B. It gives an error because multiple NVL functions are used in an expression.
- C. It executes successfully and updates the records of those employees who have been working in the company for more than 600 days.
- D. It executes successfully but no rows updated.
Answer: C
NEW QUESTION # 24
Examine the structure of the EMPLOYEES table.
You must display the details of employees who have manager with MANAGER_ID 100, who were hired in the past 6 months and who have salaries greater than 10000.
Which query would retrieve the required result?
- A. SELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000UNION ALLSELECT last_name, hire_date, salaryFROM employeesWHERE manager_ID = (SELECT employee_id FROM employees WHERE employee_id = 100)INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180;
- B. SELECT last_name, hire_date, salaryFROM employeesWHERE manager_id = (SELECT employee_id FROM employees WHERE employee_id = 100)UNION ALL(SELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000);
- C. (SELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000UNION ALLSELECT last_name, hire_date, salaryFROM employeesWHERE manager_ID = (SELECT employee_id FROM employees WHERE employee_id = 100))UNIONSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180;
- D. SELECT last_name, hire_date, salaryFROM employeesWHERE manager_id = (SELECT employee_id FROM employees WHERE employee_id = '100')UNIONSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE salary > 10000;
Answer: D
NEW QUESTION # 25
Examine the data in the ORD_ITEMS table:
Evaluate this query:
Which statement is true regarding the result?
- A. It returns an error because the HAVING clause should be specified after the GROUP BY clause.
- B. It displays the item nos with their average quantity where the average quantity is more than double the overall minimum quantity of all the items in the table.
- C. It returns an error because all the aggregate functions used in the HAVING clause must be specified in the SELECT list.
- D. It displays the item nos with their average quantity where the average quantity is more than double the minimum quantity of that item in the table.
Answer: D
NEW QUESTION # 26
View the Exhibit and examine the structure of the ORDER_ITEMS table. (Choose the best answer.)
You must select the ORDER_ID of the order that has the highest total value among all the orders in the ORDER_ITEMS table.
Which query would produce the desired result?
- A. SELECT order_idFROM order_itemsGROUP BY order_idHAVING
SUM(unit_price*quantity) = (SELECT MAX (SUM(unit_price*quantity))FROM order_items GROUP BY order_id); - B. SELECT order_idFROM order_itemsWHERE(unit_price*quantity) = (SELECT MAX (SUM(unit_price*quantity)FROM order_items) GROUP BY order_id);
- C. SELECT order_idFROM order_itemsWHERE(unit_price*quantity)
MAX(unit_price*quantity)GROUP BY order_id); - D. SELECT order_idFROM order_itemsWHERE (unit_price*quantity) = (SELECT MAX(unit_price*quantity)FROM order_itemsGROUP BY order_id)
Answer: A
NEW QUESTION # 27
Which two statements will return the names of the three employees with the lowest salaries?
- A. SELECT last_name, salary
FROM employees
WHERE ROWNUM<=3 - B. SELECT last_name,salary
FROM employees
ORDER BY salary
FETCH FIRST 3 ROWS ONLY; - C. SELECT last_name,salary
FROM employees
WHERE ROWNUM<=3
ORDER BY (SELECT salary FROM employees); - D. SELECT last_name,salary
FROM employees
FETCH FIRST 3 ROWS ONLY
ORDER BY salary; - E. SELECT last_name,salary
FROM (SELECT * FROM employees ORDER BY salary)
Answer: B
Explanation:
To retrieve the names of the three employees with the lowest salaries, the correct SQL syntax and logic are crucial:
* Option B:
* SELECT last_name, salary FROM employees ORDER BY salary FETCH FIRST 3 ROWS ONLY;
* This query correctly sorts employees by their salary in ascending order and fetches the first three rows only. The FETCH FIRST n ROWS ONLY syntax is a standard way to limit the result set in SQL.
Options A, C, D, and E do not correctly implement the logic for fetching the lowest three salaries due to misuse of ROWNUM or incorrect placement of ORDER BY and FETCH clauses.
NEW QUESTION # 28
Examine this SELECT statement and view the Exhibit to see its output:
SELECT constraints_name, constraints_type, search_condition, r_constraints_name, delete_rule, status, FROM user_constraints WHERE table_name = 'ORDERS';
Which two statements are true about the output? (Choose two.)
- A. The R_CONSTRAINT_NAME column contains an alternative name for the constraint.
- B. In the second column, 'c' indicates a check constraint.
- C. The STATUS column indicates whether the table is currently in use.
- D. The DELETE_RULE column indicates the desired state of related rows in the child table when the corresponding row is deleted from the parent table.
Answer: B,D
NEW QUESTION # 29
Examine the structure of the MARKS table:
Which two statements would execute successfully? (Choose two.)
- A. SELECT student_name,SUM(subject1)FROM marksWHERE student_name LIKE 'R%';
- B. SELECT student_name subject1FROM marksWHERE subject1 > AVG(subject1);
- C. SELECT SUM(subject1+subject2+subject3)FROM marksWHERE student_name IS NULL;
- D. SELECT SUM(DISTINCT NVL(subject1,0)), MAX(subject1)FROM marksWHERE subject1 > subject2;
Answer: C,D
NEW QUESTION # 30
Which two tasks can be performed by using Oracle SQL statements? (Choose two.)
- A. starting up a database instance
- B. connecting to a database instance
- C. changing the password for an existing database user
- D. executing operating system (OS) commands in a session
- E. querying data from tables in different databases
Answer: C,E
Explanation:
Explanation/Reference:
References:
http://www.techonthenet.com/oracle/password.php
https://docs.oracle.com/cd/B28359_01/server.111/b28324/tdpii_distdbs.htm
NEW QUESTION # 31
Which three statements are true about the DESCRIBE command?
- A. It displays all constraints that are defined for each column.
- B. It can be used only from SQL*Plus.
- C. It can be used to display the structure of an existing view.
- D. It displays the NOT NULL constraint for any columns that have that constraint.
- E. It can be used from SQL Developer.
- F. It displays the PRIMARY KEY constraint for any column or columns that have that constraint.
Answer: C,D,E
NEW QUESTION # 32
Which two statements are true regarding single row functions? (Choose two.)
- A. CONCAT : can be used to combine any number of values.
- B. INSTR : can be used to find only the first occurrence of a character in a string.
- C. TRIM : can be used to remove all the occurrences of a character from a string.
- D. MOD : returns the quotient of a division.
- E. SYSDATE : returns the database server current date and time.
- F. TRUNC : can be used with NUMBER and DATE values.
Answer: E,F
Explanation:
Explanation
NEW QUESTION # 33
Which statements are correct regarding indexes? (Choose all that apply.)
- A. When a table is dropped, the corresponding indexes are automatically dropped.
- B. For each DML operation performed, the corresponding indexes are automatically updated.
- C. A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically attempts to creates a unique index.
- D. Indexes should be created on columns that are frequently referenced as part of any expression.
Answer: A,B,C
Explanation:
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/
NEW QUESTION # 34
Examine the structure of the PROGRAMStable:
Which two SQL statements would execute successfully?
SELECT NVL(ADD_MONTHS(END_DATE,1)SYSDATE)
- A. FROM programs;
SELECT TO_DATE(NVL(SYSDATE-END_DATE,SYSDATE)) - B. FROM programs;
SELECT NVL(MONTHS_BETWEEN(start_date,end_date),'Ongoing') - C. FROM programs;
SELECT NVL(TO_CHAR(MONTHS_BETWEEN(start-date,end_date)),'Ongoing') - D. FROM programs;
Answer: B,D
NEW QUESTION # 35
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario?
- A. STUDENT_IDmust be the primary key in the STUDENTSentity and foreign key in the PROJECTSentity.
- B. The ERD must have a M:M relationship between the STUDENTSand PROJECTSentities that must be resolved into 1:M relationships.
- C. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
- D. The ERD must have a 1:M relationship between the STUDENTSand PROJECTSentities.
- E. PROJECT_IDmust be the primary key in the PROJECTSentity and foreign key in the STUDENTSentity.
Answer: B,C
Explanation:
Explanation/Reference:
References:
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html
NEW QUESTION # 36
Which two statements are true about sequences created in a single instance database?
(Choose two.)
- A. DELETE <sequencename> would remove a sequence from the database.
- B. CURRVAL is used to refer to the last sequence number that has been generated.
- C. When a database instance shuts down abnormally, the sequence numbers that have been cached but not used would be available once again when the database instance is restarted.
- D. The numbers generated by a sequence can be used only for one table.
- E. When the MAXVALUE limit for the sequence is reached, you can increase the MAXVALUE limit by using the ALTER SEQUENCE statement.
Answer: B,E
Explanation:
References:
http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_2012.htm#SQLRF00
817
https://docs.oracle.com/cd/A84870_01/doc/server.816/a76989/ch26.htm
NEW QUESTION # 37
Which three actions can you perform on an existing table containing data? (Choose three.)
- A. Add a new NOT NULL column with a DEFAULT value
- B. Change a DATE column containing data to a NUMBER data type
- C. Define a default value that is automatically inserted into a column containing nulls
- D. Increase the width of a numeric column
- E. Change the default value of a column
- F. Add a new column as the table's first column
Answer: E,F
Explanation:
Explanation/Reference: https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj24513.html
NEW QUESTION # 38
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