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Oracle 1z0-071 is an entry-level certification exam for database administrators and developers who want to prove their knowledge of SQL. 1z0-071 exam is designed to test your understanding of fundamental concepts of SQL, such as querying data, modifying data, and creating database objects. 1z0-071 exam is intended to measure your skills in writing SQL queries and statements that can be used to manipulate data in an Oracle database.
NEW QUESTION # 99
In the PROMOTIONS table, the PROMO_BEGIN_DATE column is of data type DATE and the default date format is DD-MON-RR.
Which two statements are true about expressions using PROMO_BEGIN_DATE contained a query?
- A. PROMO_BEGIN_DATE - SYSDATE will return a number.
- B. PROMO_BEGIN_DATE - 5 will return a date.
- C. PROMO_BEGIN_DATE - SYSDATE will return an error.
- D. TO_DATE(PROMO_BEGIN_DATE * 5) will return a date.
- E. TO_NUMBER(PROMO_BEGIN_DATE) - 5 will return a number.
Answer: A,B
NEW QUESTION # 100
Which statement is true about aggregate functions?
- A. The AVG function implicitly converts NULLS to zero.
- B. Aggregate functions can be nested to any number of levels.
- C. The MAX and MIN functions can be used on columns with character data types.
- D. Aggregate functions can be used in any clause of a SELECT statement.
Answer: B
NEW QUESTION # 101
Which two statements are true about Data Manipulation Language (DML) statements?
- A. An UPDATE... SET... statement can modify multiple rows based on multiple conditions on a table.
- B. An UPDATE....SET.... statement can modify multiple rows based on only a single condition on a table.
- C. An INSERT INTO...VALUES.. statement can add multiple rows per execution to a table.
- D. An INSERT INTO... VALUES..... statement can add a single row based on multiple conditions on a table.
- E. A DELETE FROM..... statement can remove rows based on only a single condition on a table.
- F. A DELETE FROM..... statement can remove multiple rows based on multiple conditions on a table.
Answer: A,F
Explanation:
Explanation
References:
http://www.techonthenet.com/sql/and_or.php
NEW QUESTION # 102
View the Exhibit and examine the structure of ORDERSand ORDER_ITEMStables.
ORDER_IDis the primary key in the ORDERStable. It is also the foreign key in the ORDER_ITEMStable wherein it is created with the ON DELETE CASCADEoption.
Which DELETEstatement would execute successfully?
DELETE orders o, order_items i
- A. WHERE order_total < 1000;
DELETE order_id - B. WHERE o.order_id = i.order_id;
DELETE - C. FROM orders
WHERE order_total < 1000; - D. FROM orders
WHERE (SELECT order_id
FROM order_items);
DELETE orders
Answer: A
NEW QUESTION # 103
View the Exhibit and examine the details of PRODUCT_INFORMATION table.
PRODUCT_NAME
CATEGORY_ID
SUPPLIER_ID
Inkjet C/8/HQ
12
102094
Inkjet C/4
12
102090
LaserPro 600/6/BW
12
102087
LaserPro 1200/8/BW
12
102099
Inkjet B/6
12
102096
Industrial 700/ID
12
102086
Industrial 600/DQ
12
102088
Compact 400/LQ
12
102087
Compact 400/DQ
12
102088
HD 12GB /R
13
102090
HD 10GB /I
13
102071
HD 12GB @7200 /SE
13
102057
HD 18.2GB @10000 /E
13
102078
HD 18.2GB @10000 /I
13
102050
HD 18GB /SE
13
102083
HD 6GB /I
13
102072
HD 8.2GB@5400
13
102093
You have the requirement to display PRODUCT_NAME from the table where the CATEGORY_ID column has values 12 or 13, and the SUPPLIER_ID column has the value 102088. You executed the following SQL statement:
SELECT product_name
FROM product_information
WHERE (category_id = 12 AND category_id = 13) AND supplier_id = 102088; Which statement is true regarding the execution of the query?
- A. It would not execute because the entire WHERE clause condition is not enclosed within the parentheses.
- B. It would execute and the output would display the desired result.
- C. It would not execute because the same column has been used in both sides of the AND logical operator to form the condition.
- D. It would execute but the output would return no rows.
Answer: D
NEW QUESTION # 104
An Oracle database server session has an uncommitted transaction in progress which updated 5000 rows in a table.
In which three situations does the transactions complete thereby committing the updates? (Choose three.)
- A. when a CREATE INDEX statement is executed successfully in the same session
- B. when the session logs out successfully
- C. when a DBA issues a successful SHUTDOWN IMMEDIATE statement and the user then issues a COMMIT
- D. when a COMMIT statement is issued by the same user from another session in the same database instance
- E. when a DBA issues a successful SHUTDOWN TRANSACTIONAL statement and the user then issues a COMMIT
- F. when a CREATE TABLE AS SELECT statement is executed unsuccessfully in the same session
Answer: A,B,C
NEW QUESTION # 105
These are the steps for a correlated subquery, listed in random order:
The WHERE clause of the outer query is evaluated.
A candidate row is fetched from the table specified in the outer query.
This is repeated for the subsequent rows of the table, until all the rows are processed.
Rows are returned by the inner query, after being evaluated with the value from the candidate row in the outer query.
Which is the correct sequence in which the Oracle server evaluates a correlated subquery?
- A. 2, 4, 1, 3
- B. 4, 2, 1, 3
- C. 4, 1, 2, 3
- D. 2, 1, 4, 3
Answer: A
Explanation:
http://rajanimohanty.blogspot.co.uk/2014/01/correlated-subquery.html
NEW QUESTION # 106
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 promo_category, DISTINCT promo_cost FROM promotions
- B. SELECT DISTINCT promo_cost, promo_category FROM promotions
- C. SELECT DISTINCT promo_cost, DISTINCT promo_category FROM promotions;
- D. SELECT DISTINCT promo_category, promo_cost FROM promotions ORDER BY 1
Answer: D
NEW QUESTION # 107
Evaluate the following SQL commands:
The command to create a table fails. Identify the reason for the SQL statement failure.
- A. You cannot use SYSDATE in the condition of a CHECK constraint.
- B. You cannot use ORD_NO and ITEM_NO columns as a composite primary key because ORD_NO is also the FOREIGN KEY.
- C. You cannot use the NEXTVAL sequence value as a DEFAULT value for a column.
- D. You cannot use the BETWEEN clause in the condition of a CHECK constraint.
Answer: A
NEW QUESTION # 108
Examine the description of the PRODUCTStable:
Which three queries use valid expressions? (Choose three.)
SELECT product_id, (expiry_date - delivery_date) * 2 FROM products;
- A. FROM products;
SELECT product_id, unit_price, unit_price + surcharge FROM products; - B. SELECT product_id, expiry_date * 2 FROM products;
- C. SELECT product_id, (unit_price * 0.15 / (4.75 + 552.25)) FROM products;
- D. discount FROM products;
SELECT product_id, unit_price, 5 "Discount", unit_price + surcharge - discount - E. SELECT product_id, unit_price | | 5 "Discount", unit_price + surcharge -
Answer: A,B,C
Explanation:
Explanation
NEW QUESTION # 109
View the Exhibit and examine the structure of the BOOKStable.
The BOOKS table contains details of 100 books.
Examine the commands executed and their outcome:
Which statement is true?
- A. The first rollback restores the 101 rows that were deleted and the second rollback causes the row was inserted to be deleted and commits the changes.
- B. Both ROLLBACKcommands restore the 101 rows that were deleted.
- C. The first rollback restores the 100 rows that were deleted and the second rollback commits only the changes.
- D. Both ROLLBACKcommands restore the 100 rows that were deleted.
Answer: A
Explanation:
Explanation
NEW QUESTION # 110
Examine the structure proposed for the TRANSACTIONStable:
Which two statements are true regarding the creation and storage of data in the above table structure?
(Choose two.)
- A. The CUST_STATUScolumn would give an error.
- B. The TRANS_VALIDITYcolumn would have a maximum size of one character.
- C. The CUST_STATUScolumn would store exactly one character.
- D. The CUST_CREDIT_LIMITcolumn would be able to store decimal values.
- E. The TRANS_DATEcolumn would be able to store day, month, century, year, hour, minutes, seconds, and fractions of seconds.
- F. The TRANS_VALIDITYcolumn would give an error.
Answer: C,F
NEW QUESTION # 111
View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables. (Choose the best answer.)
You executed this UPDATE statement:
Which statement is true regarding the execution?
- A. It would not execute because a subquery cannot be used in the WHERE clause of an UPDATE statement.
- B. It would not execute because two tables cannot be referenced in a single UPDATE statement.
- C. It would execute and restrict modifications to the columns specified in the SELECT statement.
- D. It would not execute because a SELECT statement cannot be used in place of a table name.
Answer: C
NEW QUESTION # 112
Which three statements are true about performing Data Manipulation Language (DML) operations on a view In an Oracle Database?
- A. 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.
- B. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.
- C. Views cannot be used to add on modify rows in an underlying table if the defining query of the view contains aggregating functions.
- D. Views cannot be used to query rows from an underlying table if the table has a PRIPOARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.
- E. Insert statements can always be done on a table through a view.
- F. The WITH CHECK clause has no effect when deleting rows from the underlying table through the view.
Answer: A,B,C
NEW QUESTION # 113
Which two statements are true? (Choose two.)
- A. The USER_OBJECTS view can provide information about the tables and views created by the user who queries the view.
- B. The USER_SYNONYMS view can provide information about private synonyms.
- C. DICTIONARY is a view that contains the names of all the data dictionary views that the user can access.
- D. All the dynamic performance views prefixed with v$ are accessible to all the database users.
- E. The user SYSTEM owns all the base tables and user-accessible views of the data dictionary.
Answer: A,B
NEW QUESTION # 114
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 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);
- B. 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;
- 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)INTERSECTSELECT last_name, hire_date, salaryFROM employeesWHERE hire_date > SYSDATE-180;
- D. (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;
Answer: B
NEW QUESTION # 115
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS tables:
You want to generate a list of all department IDs along with any course IDs that may have been assigned to them.
Which SQL statement must you use?
- A. SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN course_details c ON (c.department_id=d. department_id);
- B. SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN course_details c ON (d.department_id=c. department_id);
- C. SELECT d.department_id, c.course_id FROM department_details d LEFT OUTER JOIN course_details c ON (d.department_id=c. department_id);
- D. SELECT d.department_id, c.course_id FROM course_details c LEFT OUTER JOIN department_details d ON (c.department_id=d. department_id);
Answer: C
NEW QUESTION # 116
Sales data of a company is stored in two tables, SALES1and SALES2, with some data being duplicated across the tables. You want to display the results from the SALES1table, which are not present in the SALES2table.
Which set operator generates the required output?
- A. MINUS
- B. UNION
- C. INTERSECT
- D. SUBTRACT
- E. PLUS
Answer: A
Explanation:
Explanation/Reference:
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/queries004.htm
NEW QUESTION # 117
Which three statements are true regarding the SQL WHERE and HAVING clauses?
- A. The HAVING clause conditions can have aggregating functions.
- B. The WHERE and HAVING clauses cannot be used together in a SQL statement.
- C. The WHERE clause is used to exclude rows before grouping data.
- D. The HAVING clause is used to exclude one or more aggregated results after grouping data.
- E. The HAVING clause conditions can use aliases for the columns.
Answer: A,C,D
NEW QUESTION # 118
Examine the command:
What does ON DELETE CASCADE imply?
- A. When the BOOKStable is dropped, the BOOK_TRANSACTIONStable is dropped.
- B. When the BOOKStable is dropped, all the rows in the BOOK_TRANSACTIONStable are deleted but the table structure is retained.
- C. When a value in the BOOKS.BOOK_IDcolumn is deleted, the corresponding value is updated in the BOOKS_TRANSACTIONS.BOOK_IDcolumn.
- D. 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.
Answer: D
NEW QUESTION # 119
Examine the data in the CUST_NAMEcolumn of the CUSTOMERStable.
CUST_NAME
-------------------
Renske Ladwig
Jason Mallin
Samuel McCain
Allan MCEwen
Irene Mikkilineni
Julia Nayer
You need to display customers' second names where the second name starts with "Mc" or "MC".
Which query gives the required output?
SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
- A. FROM customers
WHERE SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
LIKE INITCAP ('MC%');
SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1) - B. FROM customers
WHERE INITCAP(SUBSTR(cust_name, INSTR (cust_name, ' ')+1))
LIKE 'Mc%';
SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1) - C. FROM customers
WHERE INITCAP(SUBSTR(cust_name, INSTR (cust_name, ' ')+1))
INITCAP ('MC%'); - D. FROM customers
WHERE INITCAP(SUBSTR(cust_name, INSTR (cust_name, ' ')+1))
'Mc';
SELECT SUBSTR(cust_name, INSTR (cust_name, ' ')+1)
Answer: B
NEW QUESTION # 120
......
To prepare for the 1z1-071 exam, candidates can take advantage of several resources, including training courses, practice exams, and study guides. Oracle offers a range of training courses that cover the topics and skills needed to pass the certification exam. Additionally, there are several online resources available, such as blogs and forums, that provide tips and advice on how to prepare for the exam.
The Oracle 1z0-071 exam covers a wide range of topics related to SQL and database management, including basic SQL concepts, data retrieval using SELECT statements, data manipulation using DML statements, table creation and management, and database security. It is designed for individuals who have a basic understanding of SQL and relational database concepts, and who want to improve their skills and knowledge in managing Oracle databases.
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