1z0-071 Training & Certification Get Latest Oracle PL/SQL Developer Certified Associate Updated on Nov 06, 2023
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To pass the Oracle 1z0-071 certification exam, you need to have a good understanding of SQL and its syntax. You should also be familiar with database concepts such as data modeling, normalization, and indexing. In addition, you need to have hands-on experience with Oracle Database SQL to be able to answer the exam questions effectively.
Oracle 1z1-071 exam is an essential certification for professionals who want to work with Oracle databases. Oracle Database SQL certification provides a validation of the candidate's skills and knowledge in SQL and Oracle databases. Oracle is a major player in the database industry, and the Oracle 1z1-071 certification is highly regarded by employers. Oracle Database SQL certification demonstrates that the candidate has a solid understanding of SQL and is capable of working with Oracle databases.
NEW QUESTION # 100
Which two are true about dropping columns from a table? (Choose two.)
- A. A column can be removed only if it contains no data.
- B. A column drop is implicitly committed.
- C. Multiple columns can be dropped simultaneously using the ALTER TABLEcommand.
- D. A primary key column cannot be dropped.
- E. A column that is referenced by another column in any other table cannot be dropped.
- F. A column must be set as unused before it is dropped from a table.
Answer: B,D
NEW QUESTION # 101
Which three are true about multiple INSERT statements?
- A. They can be performed on views.
- B. They can be performed on remote tables.
- C. They can be performed on relational tables.
- D. They can be performed on external tables using SQL*Loader.
- E. They can be performed only by using a subquery.
- F. They can insert each computed row into more than one table.
Answer: B,C,E
NEW QUESTION # 102
Which three statements are true about dropping and unused columns in an Oracle database?
- A. An UNUSED column's space is remained automatically when the block containing that column is next queried.
- B. A DROP COLUMN command can be rolled back.
- C. Partition key columns cannot be dropped.
- D. An UNUSED column's space is remained automatically when the row containing that column is next queried.
- E. A primary key column referenced by another column as a foreign key can be dropped if using the CASCADE option.
- F. A column that is set to NNUSED still counts towards the limit of 1000 columns per table.
Answer: C,E,F
NEW QUESTION # 103
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. MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
ALTER TABLE orders - B. ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
ALTER TABLE orders - C. MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
ALTER TABLE orders - D. ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;
Answer: A
NEW QUESTION # 104
Examine the structure of the CUSTOMERS table: (Choose two.)
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. Left outer-join with self-join
- B. Subquery
- C. Right outer-join with self-join
- D. Self-join
- E. Full outer-join with self-join
Answer: B,D
NEW QUESTION # 105
Which two statements are true about the SET VERIFY ONcommand? (Choose two.)
- A. It displays values for variables used only in the WHEREclause of a query
- B. It can be used only in SQL*Plus
- C. It displays values for variables created by the DEFINEcommand
- D. It displays values for variables prefixed with &&
- E. It can be used in SQL Developer and SQL*Plus
Answer: B,C
Explanation:
Explanation/Reference: https://blogs.oracle.com/opal/sqlplus-101-substitution-variables#4_1_8
NEW QUESTION # 106
Examine the data in the CUST_NAME column of the CUSTOMERS table.
CUST_NAME
-------------------
Renske Ladwig
Jason Mallin
Samuel McCain
Allan MCEwen
Irene Mikilineni
Julia Nayer
You need to display customers' second names where the second name starts with "Mc" or
"MC".
Which query gives the required output?
- A. SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1)FROM customersWHERE INITCAP (SUBSTR(cust_name, INSTR (cust_name, ' ')+1)) =INITCAP 'MC%';
- B. SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1)FROM customersWHERE INITCAP (SUBSTR(cust_name, INSTR (cust_name, ' ')+1)) ='Mc';
- C. SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1)FROM customersWHERE INITCAP (SUBSTR(cust_name, INSTR (cust_name, ' ')+1))LIKE 'Mc%';
- D. SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1)FROM customersWHERE SUBSTR (cust_name, INSTR (cust_name, ' ')+1)LIKE INITCAP ('MC%');
Answer: C
NEW QUESTION # 107
Evaluate the following CREATE TABLEcommand:
Which statement is true regarding the above SQL statement?
- A. It would give an error because the USING INDEX clause cannot be used on a composite primary.
- B. It would execute successfully and two indexes ORD_ITM_IDX and ORD_ITM_ID_PK would be created.
- C. It would execute successfully and only ORD_ITM_IDX index would be created.
- D. It would give an error because the USING INDEX clause is not permitted in the CREATE TABLE command.
Answer: C
NEW QUESTION # 108
Examine these SQL statements that are executed in the given order:
What will be the status of the foreign key EMP_MGR_FK?
- A. It will remain disabled and can be re-enabled manually.
- B. It will be enabled and deferred.
- C. It will remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.
- D. It will be enabled and immediate.
Answer: A
NEW QUESTION # 109
View the Exhibit and examine the structure of the PORDUCT_INFORMATION table. (Choose the best answer.)
PRODUCT_ID column is the primary key.
You create an index using this command:
SQL > CREATE INDEX upper_name_idx
ON product_information(UPPER(product_name));
No other indexes exist on the PRODUCT_INFORMATION table.
Which query would use the UPPER_NAME_IDX index?
- A. SELECT product_id
FROM product_information
WHERE UPPER(product_name) IN ('LASERPRO', 'CABLE'); - B. SELECT UPPER(product_name)
FROM product_information; - C. SELECT UPPER(product_name)
FROM product_information
WHERE product_id = 2254; - D. SELECT product_id, UPPER(product_name)
FROM product_information
WHERE UPPER(product_name) = 'LASERPRO' OR list_price > 1000;
Answer: A
NEW QUESTION # 110
View the Exhibit and examine the structure of the PROMOTION table.
You have to generate a report that displays the promo named start data for all promos that started after that last promo in the 'INTTERNET' category.
- A. SELECT promo-name, promo-being_date FROM promotion
WHERE promo-being-date IN (SELECT promo_biing_date
FROM promotions
WHERE promo_category='INTYERNET'); - B. SELECT promo-name, promo-being _date FROM promotions
Where promo_being_data >ALL (SELECT MAX (promo_being-date)
FROM promotions ) AND
Promo-category ='INTERNET'; - C. Select promo_name, promo_being_date FROM promoptions
WHERE promo_being_data > ANY (SELCT promo_being-date
FROM promotions
WHERE promo_category = 'INTERNET' - D. SELECT promo_neme, promo_being_date FROM promotions
WHERE promo_being_date > All (SELECT promo_beinjg-date
FROM promotions
WHERE promo_category ='INTERNET' );
Answer: D
NEW QUESTION # 111
Examine the description of the PRODUCT_STATUS table:
The STATUS column contains the values 'IN STOCK' or 'OUT OF STOCK' for each row.
Which two queries will execute successfully?
- A. Option E
- B. Option B
- C. Option C
- D. Option F
- E. Option A
- F. Option D
Answer: A,B
NEW QUESTION # 112
Examine the data in the CUST_NAMEcolumn of the CUSTOMERStable:
You want to display the CUST_NAMEvalues where the last name starts with Mcor MC.
Which two WHERE clauses give the required result? (Choose two.)
- A. WHERE INITCAP (SUBSTR (cust_name, INSTR(cust_name, '')+1)) LIKE 'Mc%'
- B. WHERE UPPER (SUBSTR (cust_name, INSTR(cust_name, '')+1)) LIKE UPPER ('MC%')
- C. WHERE SUBSTR (cust_name, INSTR (cust_name, '') +1) LIKE 'Mc%'
- D. WHERE INITCAP (SUBSTR (cust_name, INSTR(cust_name, '')+1)) IN ('MC%', 'Mc%)
- E. WHERE SUBSTR (cust_name, INSTR (cust_name, '') +1) LIKE 'Mc%' OR 'MC%'
Answer: C,E
NEW QUESTION # 113
Examine the description of the EMPLOYEES table:
Which query is valid?
- A. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id, join_date;
- B. SELECT dept_id, AVG(MAX(salary)) FROM employees GROUP BY dept_id;
- C. SELECT dept_id, MAX(AVG(salary)) FROM employees GROUP BY dept_id;
- D. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
Answer: A
NEW QUESTION # 114
View the Exhibit and examine the description of the tables.
You execute this SQL statement:
Which three statements are true?
- A. The statement will fail because a subquery may not be contained in a VALUES clause.
- B. The SALES table has five foreign keys.
- C. The statement will fail if a row already exists in the SALES table for product 23.
- D. A customer can exist in many countries.
- E. The statement will execute successfully and a new row will be inserted into the SALES table.
- F. A product can have a different unit price at different times.
Answer: B,D,E
NEW QUESTION # 115
Which two are true about transactions in the Oracle Database?
- A. DDL statements automatically commit only data dictionary updates caused by executing the DDL.
- B. DML statements always start new transactions.
- C. A DDL statement issued by a session with an uncommitted transation automaticall commits that transaction.
- D. An uncommitted transaction is automatically committed when the user exits SQL*PLUS
- E. A session can see uncommitted updates made by the same user in a different session
Answer: C,D
NEW QUESTION # 116
Examine the data in the PRODUCTStable:
Examine these queries:
Which queries generate the same output?
- A. 1 and 3
- B. 1, 2, and 3
- C. 2 and 3
- D. 1 and 2
Answer: A
Explanation:
Explanation/Reference: https://www.dofactory.com/sql/where-any-all (statement 2 syntax in wrong)
NEW QUESTION # 117
Which statement is true about an inner join specified in the WHERE clause of a query?
- A. It requires the column names to be the same in all tables used for the join conditions.
- B. It is applicable for only equijoin conditions.
- C. It is applicable for equijoin and nonequijoin conditions.
- D. It must have primary-key and foreign-key constraints defined on the columns used in the join condition.
Answer: C
NEW QUESTION # 118
Examine the structure of the BOOKS_TRANSACTIONS table:
You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute?
- A. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", $2 AS "LATE FEE" FROM BOOKS_TRANSACTIONS
- B. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", '$2' AS "LATE FEE" FROM BOOKS_TRANSACTIONS
- C. SELECT member_id 'MEMBER ID', due_date 'DUE DATE', '$2 AS LATE FEE' FROM BOOKS_TRANSACTIONS;
- D. SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE
FROM BOOKS_TRANSACTIONS
Answer: B
NEW QUESTION # 119
View the Exhibit and examine the structure of the ORDER_ITEMS and ORDERStables.
You are asked to retrieve the ORDER_ID,product_ID, and total price (UNIT_PRICEmultiplied by QUANTITY), where the total price is greater than 50,000.
You executed the following SQL statement:
SELECTprder_id, product_id, unit_price*quantity "Total Price"
FROM order_items
WHERE unit_price*quantity > 50000
NATURAL JOIN orders;
Which statement is true regarding the execution of the statement?
- A. The statement would execute and provide the desired result.
- B. The statement would not execute because the ON keyword is missing in the NATURAL JOINclause.
- C. The statement would not execute because the USING keyword is missing in the NATURAL JOINclause.
- D. The statement would not execute because the WHEREclause is before the NATURAL JOINclause.
Answer: D
NEW QUESTION # 120
View the exhibits and examine the structures of the COSTSand PROMOTIONStables.
Evaluate the following SQL statement:
What would be the outcome of the above SQL statement?
- A. It displays prod IDs in the promos with the lowest cost in the same time interval.
- B. It displays prod IDs in the promo with the lowest cost.
- C. It displays prod IDs in the promos which cost less than the highest cost in the same time interval.
- D. It displays prod IDs in the promos with the highest cost in the same time interval.
Answer: C
NEW QUESTION # 121
Which two statements are true about single row functions?
- A. TRUNC : can be used with number and date values
- B. ceil : can be used for positive and negative numbers
- C. mod : returns the quotient of a division operation
- D. FLOOR : returns the smallest integer greater than or equal to a specified number
- E. CONCAT : can be used to combine any number of values
Answer: B,E
NEW QUESTION # 122
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