[Dec 12, 2021] 1z1-071 Dumps Full Questions - Exam Study Guide
Oracle PL/SQL Developer Certified Associate Free Certification Exam Material from DumpStillValid with 305 Questions
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NEW QUESTION 117
Examine the structure of the SALES table. (Choose two.)
Examine this statement:
SQL > CREATE TABLE sales1 (prod_id, cust_id, quantity_sold, price)
AS
SELECT product_id, customer_id, quantity_sold, price
FROM sales
WHERE 1 = 2;
Which two statements are true about the SALES1 table?
- A. It has PRIMARY KEY and UNIQUE constraints on the selected columns which had those constraints in the SALES table.
- B. It will not be created because of the invalid WHERE clause.
- C. It will have NOT NULL constraints on the selected columns which had those constraints in the SALES table.
- D. It will not be created because the column-specified names in the SELECT and CREATE TABLE clauses do not match.
- E. It is created with no rows.
Answer: C,E
NEW QUESTION 118
View the exhibit and examine the ORDERS table.
The ORDERS table contains data and all orders have been assigned a customer ID. Which statement would add a NOT NULL constraint to the CUSTOMER_ID column?
- A. ALTER TABLE ordersMODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
- B. ALTER TABLE ordersMODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
- C. ALTER TABLE ordersADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;
- D. ALTER TABLE ordersADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
Answer: B
NEW QUESTION 119
The first DROP operation is performed on PRODUCTS table using this command:
DROP TABLE products PURGE;
Then a FLASHBACK operation is performed using this command:
FLASHBACK TABLE products TO BEFORE DROP;
Which is true about the result of the FLASHBACK command?
- A. It recovers the table structure, data, and the indexes.
- B. It recovers the table structure and data but not the related indexes.
- C. It is not possible to recover the table structure, data, or the related indexes.
- D. It recovers only the table structure.
Answer: C
Explanation:
Explanation
https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_9003.htm
NEW QUESTION 120
The user SCOTTwho is the owner of ORDERSand ORDER_ITEMStables issues this GRANTcommand:
GRANT ALL
ON orders, order_items
TO PUBLIC;
What must be done to fix the statement?
- A. PUBLICshould be replaced with specific usernames.
- B. Separate GRANTstatements are required for ORDERSand ORDER_ITEMS tables.
- C. WITH GRANT OPTIONshould be added to the statement.
- D. ALLshould be replaced with a list of specific privileges.
Answer: B
Explanation:
Explanation/Reference:
References:
http://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqljgrant.html
NEW QUESTION 121
View the exhibit and examine the description of the EMPLOYEES table. (Choose two.)
You executed this SQL statement:
SELECT first_name, department_id, salary
FROM employees
ORDER BY department_id, first_name, salary desc;
Which two statements are true regarding the result? (Choose two.)
- A. The values in the FIRST_NAME column would be returned in ascending order for all employees having the same value in the DEPARTMENT_ID column.
- B. The values in the SALARY column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID and FIRST_NAME column.
- C. The values in the SALARY column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID column.
- D. The values in all columns would be returned in descending order.
- E. The values in the FIRST_NAME column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID column.
Answer: A,B
NEW QUESTION 122
Which three statements are true about inner and outer joins? (Choose three.)
- A. A full outer join returns matched and unmatched rows
- B. Outer joins can be used when there are multiple join conditions on two tables
- C. Outer joins can only be used between two per query
- D. An inner join returns matched rows
- E. A full outer join must use Oracle syntax
- F. A left or right outer join returns only unmatched rows
Answer: A,D,F
NEW QUESTION 123
Which two are true about the USING clause when joining tables?
- A. It can never be used with a full outer join.
- B. It can never be used with onatural join.
- C. All column names in a USING clause must be qualified with a table name or table alias.
- D. It is used to specify an equijoin of columns that have the same name in both tables.
- E. It is used to specify an explicit join condition involving operators.
Answer: B,E
NEW QUESTION 124
You need to display the first names of all customers from the CUSTOMERStable that contain the character 'e' and have the character 'a' in the second last position.
Which query would give the required output?
SELECT cust_first_name
- A. FROM customers
WHERE INSTR(cust_first_name, 'e')IS NOT NULL AND
SUBSTR(cust_first_name, 1, -2)='a';
SELECT cust_first_name - B. FROM customers
WHERE INSTR(cust_first_name, 'e')<>0 AND
SUBSTR(cust_first_name, LENGTH(cust_first_name), -2)='a'; - C. FROM customers
WHERE INSTR(cust_first_name, 'e')<>0 AND
SUBSTR(cust_first_name, -2, 1)='a';
SELECT cust_first_name - D. FROM customers
WHERE INSTR(cust_first_name, 'e')<>'' AND
SUBSTR(cust_first_name, -2, 1)='a';
SELECT cust_first_name
Answer: C
NEW QUESTION 125
Examine the description of the CUSTOMERS table:
CUSTNO is the PRIMARY KEY.
You must determine if any customers' details have been entered more than once using a different CUSTNO, by listing all duplicate names.
Which two methods can you use to get the required result?
- A. RIGHT OUTER JOIN with self join
- B. subquery
- C. FULL OUTER JOIN with self join
- D. self join
- E. LEFT OUTER JOIN with self join
Answer: B,D
NEW QUESTION 126
View the exhibit and examine the ORDERStable.
The ORDERStable contains data and all orders have been assigned a customer ID. Which statement would add a NOTNULLconstraint to the CUSTOMER_IDcolumn?
ALTER TABLE orders
- A. ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;
- B. MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
ALTER TABLE orders - C. MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
ALTER TABLE orders - D. ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
ALTER TABLE orders
Answer: B
NEW QUESTION 127
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS:
You want to generate a report that shows all course IDs irrespective of whether they have corresponding department IDs or not but no department IDs if they do not have any courses.
Which SQL statement must you use?
SELECT course_id, department_id, FROM department_details d RIGHT OUTER JOIN
- A. department_details d ON (c.department_id=d. department_id)
SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN - B. course_details c USING (department_id)
SELECT c.course_id, d.department_id FROM course_details c RIGHT OUTER JOIN - C. department_details d ON (c.department_id<>d. department_id)
- D. .department_details d ON (c.depatrment_id=d.department_id)
SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN
Answer: A
NEW QUESTION 128
Which three actions can you perform on an existing table containing date?
- A. Change the default value of a column.
- B. Add a new column as the table's first column.
- C. Define a default value that is automatically inserted into a column containing nulls.
- D. Change a DATE Column containing data to a NUMBER data type.
- E. Increase the width of a numeric column.
- F. Add a new NOT NULL Column with a DEFAULT value.
Answer: A,E,F
NEW QUESTION 129
View the Exhibit and examine the structure of the EMPLOYEES table.
You want to display all employees and their managers having 100 as the MANAGER_ID.
You want the output in two columns: the first column would have the LAST_NAME of the managers and the second column would have LAST_NAME of the employees.
Which SQL statement would you execute?
- A. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
ON m.employee_id = e.manager_id
WHERE e.managerjd=100; - B. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
ON m.employee_id = e.manager_id
WHERE m.manager_id=100; - C. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
ON e.employee_id = m.manager_id
WHERE m.manager_id=100; - D. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
WHERE m.employee_id = e.manager_id AND e.managerjd=100;
Answer: A
NEW QUESTION 130
What is the primary difference between the relational database (RDB) and object-oriented database (OODB) models?
- A. RDB allows the definition of relationships between different tables, whereas OODB does not allow this.
- B. RDB supports only E.F. Codd's rules, whereas OODB does not support them.
- C. OODB supports multiple objects in the same database, whereas RDB supports only tables.
- D. OODB incorporates methods with data structure definition, whereas RDB does not allow this.
Answer: D
NEW QUESTION 131
Examine this SQL statement:
SELECT cust_id, cust_last_name "Last Name
FROM customers
WHERE countryid=10
UNION
SELECT custid CUSTNO, cust_last_name
FROM customers
WHERE countryid=30
Identify three ORDER BY clauses, any one of which can complete the query successfully.
- A. ORDER BY"CUST NO"
- B. ORDER BY CUSTNO
- C. ORDER BY 2, cust_id
- D. ORDER BY "Last Name"
- E. ORDERBY2, 1
Answer: C,D,E
NEW QUESTION 132
SCOTTis a user in the database.
Evaluate the commands issued by the DBA:
Which statement is true regarding the execution of the above commands?
- A. Statement 2 would not execute because system privileges and object privileges cannot be granted together in a single GRANTcommand.
- B. Statement 3 would not execute because role and system privileges cannot be granted together in a single GRANTstatement.
- C. Statement 1 would not execute because the IDENTIFIED BY <password>clause is missing.
- D. Statement 1 would not execute because the WITH GRANToption is missing.
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION 133
View the Exhibit and examine the description for the PRODUCTS and SALEStable.
PROD_IDis a primary key in the PRODUCTStable and foreign key in the SALEStable with ON DELETE CASCADEoption. The SALEStable contains data for the last three years. You want to remove all the rows from the PRODUCTStable for which no sale was done for the last three years.
Which is the valid DELETEstatement?
DELETE
- A. FROM products
WHERE prod_id IN (SELECT prod_id
FROM sales
WHERE time_id >= SYSDATE - 3*365 ); - B. FROM products
WHERE prod_id = (SELECT prod_id
FROM sales
WHERE time_id - 3*365 = SYSDATE );
DELETE - C. FROM products
WHERE prod_id = (SELECT prod_id
FROM sales
WHERE SYSDATE >= time_id - 3*365 );
DELETE - D. FROM products
WHERE prod_id IN (SELECT prod_id
FROM sales
WHERE SYSDATE - 3*365 >= time_id);
DELETE
Answer: D
NEW QUESTION 134
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. The INSERT statement will return an error because the ELSE clause is missing.
- C. All rows are evaluated by all the three WHEN clauses.
- D. 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.
Answer: C
NEW QUESTION 135
Examine the description of the BOOKS table:
The table has 100 rows.
Examine this sequence of statements issued in a new session:
Which two statements are true?
- A. The second ROLLBACK command replays the delete.
- B. The second ROLLBACK command does nothing.
- C. The second ROLLBACK command undoes the insert.
- D. The first ROLLBACK command restores the 101 rows that were deleted and commits the inserted row.
- E. The first ROLLBACK command restores the 101 rows that were deleted, leaving the inserted row still to be committed.
Answer: D
NEW QUESTION 136
View the Exhibit and examine the structure of ORDER_ITEMSand ORDERStables.
You need to remove from the ORDER_ITEMStable those rows that have an order status of 0 or 1 in the ORDERStable.
Which two DELETEstatements are valid (Choose two.)
DELETE *
- A. FROM order_items
WHERE order_id IN (SELECT order_id
FROM orders
WHERE orders_status in (0,1)); - B. FROM (SELECT * FROM order_items I,orders o
WHERE i.order_id = o.order_id AND order_status IN (0,1));
DELETE FROM order_items i - C. WHERE order_id = (SELECT order_id FROM orders o
WHERE i.order_id = o.order_id AND order_status IN (0,1));
DELETE - D. FROM order_items
WHERE order_id IN (SELECT order_id)
FROM orders
WHERE order_status IN (0,1));
DELETE
Answer: A,B
NEW QUESTION 137
View the exhibit and examine the description of the EMPLOYEES table. (Choose two.)
You executed this SQL statement:
SELECT first_name, department_id, salary
FROM employees
ORDER BY department_id, first_name, salary desc;
Which two statements are true regarding the result? (Choose two.)
- A. The values in the FIRST_NAME column would be returned in ascending order for all employees having the same value in the DEPARTMENT_ID column.
- B. The values in the SALARY column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID and FIRST_NAME column.
- C. The values in the SALARY column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID column.
- D. The values in all columns would be returned in descending order.
- E. The values in the FIRST_NAME column would be returned in descending order for all employees having the same value in the DEPARTMENT_ID column.
Answer: A,B
NEW QUESTION 138
You need to list the employees in DEPARTMENT_ID 20 days in a single row, ordered by HIRE_DATE.
Examine the sample output:
Which query will provide the required output?
- A. SELECT LISTAGG(last_name, '; ')
WITHIN GROUP ORDER BY (hire_date) "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; - B. SELECT LISTAGG(last_name)
WITHIN GROUP ORDER BY (hire_date) "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; - C. SELECT LISTAGG(last_name, '; ') "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; WITHIN GROUP ORDER BY (hire_date);
- D. SELECT LISTAGG(last_name, '; ') "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; ORDER BY (hire_date);
Answer: A
NEW QUESTION 139
In which three situations does a new transaction always start?
- A. when issuing the first Data Manipulation Language (DML) statement after a COMMIT or ROLLBACK statement was issued in the same session
- B. when issuing a CREATE TABLEstatement after a SELECTstatement was issued in the same session
- C. when issuing a SELECT FOR UPDATEstatement after a CREATE TABLE AS SELECTstatement was issued in the same session
- D. when issuing a DML statement after a DML statement failed in the same session
- E. when issuing a CREATE INDEXstatement after a CREATE TABLEstatement completed successfully in the same session
- F. when issuing a TRUNCATEstatement after a SELECT statement was issued in the same session
Answer: A,C,D
Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm
NEW QUESTION 140
Which two statements are true about an Oracle database? (Choose two.)
- A. A table can have multiple primary keys.
- B. A VARCHAR2column without data has a NULLvalue.
- C. A table can have multiple foreign keys.
- D. A NUMBERcolumn without data has a zero value.
- E. A column definition can specify multiple data types.
Answer: C,D
NEW QUESTION 141
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